Exploration for underground resources in the Kingdom of Saudi Arabia, development of the Saudi economy, huge drilling machines used in petroleum extraction, petrochemical industries and projects in the Kingdom, pipelines and heavy steel equipment, work in the field of industrial and petroleum engineering.
Drilling and prospecting for underground resources in the Kingdom of Saudi Arabia, petrochemical industries and projects in the Kingdom, pipelines and heavy steel equipment, huge drilling machines used in extracting petroleum, development of the Saudi economy, work in the field of industrial and petroleum engineering.
Huge drilling machines used in petroleum extraction, exploration for underground resources in the Kingdom of Saudi Arabia, development of the Saudi economy, petrochemical industries and projects in the Kingdom, pipelines and heavy steel equipment, work in the field of industrial and petroleum engineering.
Petrochemical industries and projects in the Kingdom, development of the Saudi economy, pipelines and heavy steel equipment, huge drilling machines used in oil extraction, exploration for underground resources in the Kingdom of Saudi Arabia, work in the field of industrial and petroleum engineering
Drilling and prospecting for underground resources in the Kingdom of Saudi Arabia, petrochemical industries and projects in the Kingdom, pipelines and heavy steel equipment, huge drilling machines used in extracting petroleum, development of the Saudi economy, work in the field of industrial and petroleum engineering.
Exploration of underground resources in the Kingdom of Saudi Arabia, petrochemical industries and projects in the Kingdom, pipelines and heavy steel equipment, huge drilling machines used in oil extraction, development of the Saudi economy, work in the field of industrial and petroleum engineering
Extracting underground resources from the sea, petrochemical industries and projects in the Kingdom, huge machines and heavy equipment used in petroleum exploration, work in the field of petroleum engineering, oil and gas refining plants in the industrial zone in Saudi Arabia, Saudi economic growth and progress
Petrochemical industries and projects in the Kingdom, development of the Saudi economy, pipelines and heavy steel equipment, huge drilling machines used in oil extraction, exploration for underground resources in the Kingdom of Saudi Arabia, work in the field of industrial and petroleum engineering
Extracting underground resources from the sea, huge machines and heavy equipment used in oil exploration, working in the field of petroleum engineering, petrochemical industries and projects in the Kingdom, oil and gas refining plants in the industrial zone in Saudi Arabia, Saudi economic growth and progress
Work progress at work site, a, Back view of two Saudi Arabian Gulf workers wearing orange protective suits and helmets Oil and gas refinery, pipelines extending from the depths of the sea to the refineries, working in the field of petroleum engineering in the Kingdom of Saudi Arabia
Huge machinery and heavy equipment used in petroleum exploration, work in the field of petroleum engineering, oil and gas refining plants in the industrial zone in Saudi Arabia, extracting underground resources from the sea, petrochemical industries and projects in the Kingdom, Saudi economic growth and progress
Drilling rig drilling for oil in the desert during the day, import and export of underground resources, quality of tools and equipment for the manufacture and storage of petroleum, cranes and huge drilling machines for extracting oil and oils
The renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, the quality of machinery and equipment in the factories that extract oil wealth from the depths of the seas, the concept of petroleum engineering in the Gulf countries, oil and gas refinery, petrochemical industries and projects
Oil and gas refinery, work in the field of petroleum engineering, Saudi Gulf Arab workers wearing a protective suit and a protective helmet repair and evaluate the quality of machinery and equipment in oil laboratories and factories in the Kingdom of Saudi Arabia, pipelines extending from the depths of the sea to refineries
Work in the field of petroleum engineering, oil and gas refinery, a group of Saudi Gulf Arab workers wearing a protective suit and a protective helmet repairing machinery and equipment in oil laboratories and factories in the Kingdom of Saudi Arabia, pipelines extending from the depths of the sea to refineries.
Pipelines and heavy steel equipment, silhouette from behind of a Saudi Arabian Gulf engineer prospecting for underground wealth in Saudi Arabia, huge drilling machines used in oil extraction at sunset, working in petroleum engineering, salulite
Petrochemical industries and projects in the Kingdom, extracting underground resources from the sea, huge machines and heavy equipment used in oil exploration, work in the field of petroleum engineering, oil and gas refining factories in the industrial zone in Saudi Arabia, Saudi economic growth and progress
Renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, quality of machinery and equipment in factories extracting oil wealth from the depths of the seas, the concept of petroleum engineering, oil and gas refinery, petrochemical industries and projects
Oil and gas refinery, work in the field of petroleum engineering, Saudi Gulf Arab workers wearing a protective suit and a protective helmet repair and evaluate the quality of machinery and equipment in oil laboratories and factories in the Kingdom of Saudi Arabia, pipelines extending from the depths of the sea to refineries
Extracting underground resources from the sea, huge machines and heavy equipment used in oil exploration, working in the field of petroleum engineering, petrochemical industries and projects in the Kingdom, oil and gas refining plants in the industrial zone in Saudi Arabia, Saudi economic growth and progress
Supervising oil plants and factories in Saudi Arabia, back view of two Saudi Arabian Gulf workers wearing orange protective suits and helmets, pipelines extending from the depths of the sea to the refineries, working in the field of petroleum engineering, oil and gas refinery
Petrochemical industries and projects in the Kingdom, extracting underground resources from the sea, huge machines and heavy equipment used in oil exploration, work in the field of petroleum engineering, oil and gas refining factories in the industrial zone in Saudi Arabia, Saudi economic growth and progress
Work progress at work site, a, Back view of two Saudi Arabian Gulf workers wearing orange protective suits and helmets Oil and gas refinery, pipelines extending from the depths of the sea to the refineries, working in the field of petroleum engineering in the Kingdom of Saudi Arabia
The concept of petroleum engineering, oil and gas refinery, petrochemical industries and projects, the renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, the quality of machinery and equipment in factories that extract oil wealth from the depths of the sea
Fuel factories and mines in Saudi Arabia, large and huge warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy
Fuel factories and mines in Saudi Arabia, large and huge warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy
Oil and gas refinery, petrochemical industries and projects, renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, quality of machinery and equipment in factories extracting oil wealth from the depths of the seas, the concept of petroleum engineering
Fuel factories and mines in Saudi Arabia, large and huge warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy
Fuel factories and mines in Saudi Arabia, large and huge warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy
Engineering and urban development of oil refineries in the Kingdom of Saudi Arabia, oil refinery on soft golden sands, harsh and dry climate, adoption of modern techniques and technology in oil and gas production, petrochemical industries and projects, huge and modern tools and equipment
Engineering development of oil refineries in Saudi Arabia, oil mines on soft golden sands, harsh and dry climate, adoption of modern technologies in oil and gas production, petrochemical industries and projects, huge and modern tools and equipment, towers and metal structures in desert lands
Steel Pipelines and Cables, Pollution from Petroleum Production, Petrochemical Industries and Projects, Oil and Gas Refining Plant in Industrial Area, Factories and Plants in Saudi Arabia
Oil and gas refinery in industrial area, steel pipelines and cables, petrochemical industries and projects, pollution from oil production, factories and plants in Saudi Arabia, large and huge warehouses, industrial engineering and equipment
Petrochemical industries and projects, engineering and urban development of oil refineries in the Kingdom of Saudi Arabia, oil refinery on soft golden sands, harsh and dry climate, adoption of modern techniques and technology in oil and gas production, huge and modern tools and equipment
Sky view at dusk with high illuminated structures, field of petroleum engineering in the Gulf countries, oil and gas refinery, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories and laboratories in the Kingdom of Saudi Arabia, large and huge warehouses and tanks
Huge industrial facilities illuminated at dawn, quality of petroleum production plants and equipment, oil and gas refinery, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, metal and chemical industries
Steel pipelines and cables, quality of petroleum production plants and equipment, large industrial facilities, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, metals and chemicals industries
Fuel factories and mines in Saudi Arabia, large and huge warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy
Engineering and urban development of oil refineries in the Kingdom of Saudi Arabia, oil refinery on soft golden sands, harsh and dry climate, adoption of modern techniques and technology in oil and gas production, petrochemical industries and projects, huge and modern tools and equipment
Oil and gas refineries in the industrial zone in Saudi Arabia, Extracting underground resources from the sea, Petrochemical industries and projects in the Kingdom, Huge machines and heavy equipment used in oil exploration, Working in the field of petroleum engineering, Saudi economic growth and progress
Work in the field of petroleum engineering, oil and gas refinery, a group of Saudi Gulf Arab workers wearing a protective suit and a protective helmet repairing machinery and equipment in oil laboratories and factories in the Kingdom of Saudi Arabia, pipelines extending from the depths of the sea to refineries.
Fuel factories and mines in the Kingdom of Saudi Arabia, large and huge warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy.
Lighting towers and metal structures at night, oil factories and plants in the Kingdom of Saudi Arabia, the concept of petroleum engineering in the Gulf countries, oil and gas refineries, petrochemical industries and projects, the renaissance of the Saudi national economy, large and huge warehouses and tanks
Engineering and urban development of oil refineries in the Kingdom of Saudi Arabia, oil refinery on soft golden sands, harsh and dry climate, adoption of modern techniques and technology in oil and gas production, petrochemical industries and projects, huge and modern tools and equipment
Petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories and factories in the Kingdom of Saudi Arabia, gas refinery, the concept of petroleum engineering in the Gulf countries, lighting towers and metal structures at sunset, large and huge warehouses and tanks.
Engineering and urban development of oil refineries in the Kingdom of Saudi Arabia, oil refinery on soft golden sands, harsh and dry climate, adoption of modern techniques and technology in oil and gas production, petrochemical industries and projects, huge and modern tools and equipment
Oil and gas refinery in industrial area, steel pipelines and cables, petrochemical industries and projects, pollution from oil production, factories and plants in Saudi Arabia, large and huge warehouses, industrial engineering and equipment
Fuel factories and mines in the Kingdom of Saudi Arabia, large and huge warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy.
Petrochemical industries and projects, oil and gas refineries, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, towers and metal structures in desert lands, large and huge warehouses and tanks, fuel factories and plants in the Kingdom of Saudi Arabia
Pipelines extending from the depths of the sea to the refineries, working in the field of petroleum engineering, oil and gas refinery, supervising oil plants and factories in the Kingdom of Saudi Arabia, a picture from the back of two Saudi Arabian Gulf workers wearing protective suits and protective helmets
Petrochemical industries and projects, engineering and urban development of oil refineries in the Kingdom of Saudi Arabia, oil refinery on soft golden sands, adoption of modern techniques and technology in gas production, huge and modern tools and equipment
Ensuring the safety of pipelines extending from the depths of the sea to refineries, oil and gas refineries, working in the field of petroleum engineering, a Saudi Gulf Arab man wearing a protective suit and a protective helmet evaluating the quality of machinery and equipment in oil laboratories and factories in the Kingdom of Saudi Arabia
Oil factories and plants in the Kingdom of Saudi Arabia, the renaissance of the Saudi national economy, oil and gas refining, the concept of petroleum engineering in the Gulf States, large and huge warehouses and tanks, petrochemical industries and projects
Lighting towers and metal structures at sunset, the concept of petroleum engineering in the Gulf countries, oil and gas refinery, petrochemical industries and projects, the renaissance of the Saudi national economy, large and huge warehouses and tanks, oil factories and laboratories in the Kingdom of Saudi Arabia
Petroleum refining factories in the Kingdom of Saudi Arabia, the quality of machinery and equipment in oil extraction factories, modern technologies in oil and gas production, the concept of work in the industrial engineering sector.
An excavator exploring for oil in the desert during the day, import and export of underground resources, quality tools and equipment for manufacturing and storing petroleum, cranes and huge drilling machines for extracting oil and oils.
Extract oil wealth from the depths of the seas, the concept of petroleum engineering in the Gulf countries, oil and gas refinery, petrochemical industries and projects, the renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, lighting towers and metal structures at sunset
Engineering and urban development of oil refineries in the Kingdom of Saudi Arabia, oil refinery on soft golden sands, harsh and dry climate, adoption of modern techniques and technology in oil and gas production, petrochemical industries and projects, huge and modern tools and equipment
Oil and gas refinery, oil factories and plants in the middle of nature in the Kingdom of Saudi Arabia, the renaissance of the Saudi national economy, the concept of petroleum engineering in the Gulf countries, large and huge warehouses and tanks, petrochemical industries and projects
Lighting of towers and metal structures at night, the renaissance of the Saudi national economy, oil factories and plants in the Kingdom of Saudi Arabia, oil and gas refinery, the concept of petroleum engineering in the Gulf countries, large and huge warehouses and tanks, petrochemical industries and projects
Petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, oil and gas refineries, the renaissance of the Saudi national economy, the view of large and huge warehouses and tanks at sunset, oil factories and laboratories in the Kingdom of Saudi Arabia
An excavator exploring for oil in the desert during the day, import and export of underground resources, quality tools and equipment for manufacturing and storing petroleum, cranes and huge drilling machines for extracting oil and oils.
Large and massive warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, fuel factories and mines in the Kingdom of Saudi Arabia
Large and huge warehouses and tanks, fuel factories and mines in the Kingdom of Saudi Arabia, metal towers and structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy.
Metal and chemical industries, oil factories in Saudi Arabia, quality of petroleum production plants and equipment, large illuminated industrial facilities, oil and gas refinery, petrochemical projects contributing to the renaissance of the Saudi national economy
The renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, the quality of machinery and equipment in the factories that extract oil wealth from the depths of the seas, the concept of petroleum engineering in the Gulf countries, oil and gas refinery, petrochemical industries and projects
Exploration of underground resources in the Kingdom of Saudi Arabia, petrochemical industries and projects in the Kingdom, pipelines and heavy steel equipment, huge drilling machines used in oil extraction, development of the Saudi economy, work in the field of industrial and petroleum engineering
Towers and metal structures in desert lands, large and huge warehouse tanks, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, fuel factories in the Kingdom of Saudi Arabia
Petroleum engineering concept in the Gulf countries, oil factories and plants in the Kingdom of Saudi Arabia, petrochemical industries and projects, the renaissance of the Saudi national economy, an aerial view of an oil and gas refinery, large and huge warehouses and tanks, steel pipelines and cables
Oil and gas refinery in industrial area amidst forests and nature, steel pipelines and cables, petrochemical industries and projects, pollution resulting from oil production, factories and plants in Saudi Arabia, huge and large warehouses, industrial engineering and equipment
Giant industrial engineering and equipment, oil and gas refinery in industrial area, steel pipelines and cables, petrochemical industries and projects, large industrial complex with tall smoke chimneys in Saudi Arabia, huge and large warehouses
Oil factories and plants in the Kingdom of Saudi Arabia, lighting towers and metal structures, the concept of petroleum engineering in the Gulf countries, oil and gas refinery, petrochemical industries and projects, the renaissance of the Saudi national economy, large and huge warehouses and tanks
Metal and chemical industries, oil factories in Saudi Arabia, quality of petroleum production plants and equipment, large illuminated industrial facilities, oil and gas refinery, petrochemical projects contributing to the renaissance of the Saudi national economy
Oil refinery on soft golden sands, engineering and urban development of oil refineries in the Kingdom of Saudi Arabia, harsh and dry climate, adoption of modern techniques and technology in oil and gas production, petrochemical industries and projects, huge and modern tools and equipment
Oil and gas refinery in industrial area, factories and plants in Saudi Arabia, huge and large warehouses, industrial engineering and equipment, petrochemical industries and projects, steel pipelines and cables
Fuel factories and mines in Saudi Arabia, large and huge warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy
Engineering and urban development of oil refineries in the Kingdom of Saudi Arabia, oil refinery on soft golden sands, harsh and dry climate, adoption of modern techniques and technology in oil and gas production, petrochemical industries and projects, huge and modern tools and equipment
Petrochemical industries and projects, steel pipelines and cables, oil and gas refining plant in the industrial area, factories and plants in Saudi Arabia, large and huge warehouses, industrial engineering and equipment
Oil and gas refinery, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories and plants in the Kingdom of Saudi Arabia, the concept of petroleum engineering in the Gulf countries, large and huge warehouses and tanks
Oil refineries in Saudi Arabia, petrochemical projects contributing to the renaissance of the Saudi national economy, gas plants and refineries, the concept of petroleum engineering in the Gulf countries, lighting towers and metal structures at sunset, large and huge warehouses and tanks
Fuel factories and mines in the Kingdom of Saudi Arabia, large and huge warehouses and tanks, metal towers and structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy.
The view of the sky at dawn, oil factories and factories in the Kingdom of Saudi Arabia, oil and gas refineries, the concept of petroleum engineering in the Gulf countries, lighting towers and metal structures, large and huge warehouses and tanks, petrochemical industries and projects, the renaissance of the Saudi national economy
Work in the field of petroleum engineering, oil and gas refinery, a group of Saudi Gulf Arab workers wearing a protective suit and a protective helmet repairing machinery and equipment in oil laboratories and factories in the Kingdom of Saudi Arabia, pipelines extending from the depths of the sea to refineries.
Huge and large warehouses, engineering and industrial equipment, factories and laboratories in the Kingdom of Saudi Arabia, oil and gas refining plant, Dukhan laboratories refinery, petrochemical industries and projects, white background
Metal and chemical industries, oil factories in Saudi Arabia, quality of petroleum production plants and equipment, large illuminated industrial facilities, oil and gas refinery, petrochemical projects contributing to the renaissance of the Saudi national economy
The quality of machinery and equipment in oil extraction plants, the use of modern technologies in oil and gas production, oil refining plants in the Kingdom of Saudi Arabia, the concept of work in the industrial engineering sector, the view of clouds in the sky
Narrow path between industrial pipes illuminated by the environment, oil factories and plants in the Kingdom of Saudi Arabia, the renaissance of the Saudi national economy, oil and gas refining, the concept of petroleum engineering in the Gulf States, large and huge warehouses and tanks, petrochemical industries and projects
Engineering and urban development of oil refineries in the Kingdom of Saudi Arabia, oil refinery on soft golden sands, harsh and dry climate, adoption of modern techniques and technology in oil and gas production, petrochemical industries and projects, huge and modern tools and equipment
The concept of petroleum engineering, oil and gas refinery, petrochemical industries and projects, the renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, the quality of machinery and equipment in factories that extract oil wealth from the depths of the sea
Petrochemical industries and projects, large and huge warehouses, industrial engineering and equipment, factories and plants in Saudi Arabia at sunset, oil and gas refinery, refinery smoke factories, economic growth and progress, oil production in the Kingdom
Large and massive warehouses and tanks, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, towers and metal structures in desert lands, fuel factories and mines in the Kingdom of Saudi Arabia
Petrochemical industries and projects, engineering and urban development of oil refineries in the Kingdom of Saudi Arabia, oil refinery on soft golden sands, harsh and dry climate, adoption of modern techniques and technology in oil and gas production, huge and modern tools and equipment
Engineering and urban development of oil refineries in the Kingdom of Saudi Arabia, oil refinery on soft golden sands, harsh and dry climate, adoption of modern techniques and technology in oil and gas production, petrochemical industries and projects, huge and modern tools and equipment
Engineering and urban development of oil refineries in the Kingdom of Saudi Arabia, oil refinery on soft golden sands, harsh and dry climate, adoption of modern techniques and technology in oil and gas production, petrochemical industries and projects, huge and modern tools and equipment
Lighting towers and metal structures at night, oil factories and plants in the Kingdom of Saudi Arabia, the concept of petroleum engineering in the Gulf countries, oil and gas refineries, petrochemical industries and projects, the renaissance of the Saudi national economy, large and huge warehouses and tanks
Petrochemical industries and projects, pollution resulting from oil production, steel pipelines and cables, oil and gas refinery in the industrial area, factories and plants in the Kingdom of Saudi Arabia, large and huge warehouses, industrial engineering and equipment
Pipelines and steel cables, Petrochemical industries and projects, Oil and gas refinery in the industrial area, Factories and plants in the Kingdom of Saudi Arabia, Industrial engineering and equipment, Huge and large warehouses, View of smoke from large industrial facilities at sunset
Engineering and urban development of oil refineries, oil refinery in the desert of Saudi Arabia, huge and modern tools and equipment, adoption of modern techniques and technology in oil and gas production, soft golden sand dunes
Metal and chemical industries, oil factories in Saudi Arabia, quality of petroleum production plants and equipment, large illuminated industrial facilities, oil and gas refinery, petrochemical projects contributing to the renaissance of the Saudi national economy
Large and massive warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, fuel factories and mines in the Kingdom of Saudi Arabia
Huge industrial facilities illuminated at dawn, quality of petroleum production plants and equipment, oil and gas refinery, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, metal and chemical industries
View of factory smoke in the air, oil production in the Kingdom, factories and plants in Saudi Arabia at sunset, industrial engineering and equipment, petrochemical industries and projects, economic growth and progress, factory smoke refinery, oil and gas refining plant, huge and large warehouses
The development and growth of the Saudi engineering sector, the supervision of oil refining in the refineries of the Kingdom of Saudi Arabia, a picture from the back of a young Saudi Arab Gulf engineer wearing a protective jacket and helmet standing in front of pipes and heavy equipment in a gas and oil production factory
Large and massive warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, fuel factories and mines in the Kingdom of Saudi Arabia
Working in the field of petrochemical industries and projects, steel pipelines and cables, the concept of gas productivity in the Kingdom of Saudi Arabia, following up on the progress of work in factories and plants, a group of Saudi Gulf Arab engineers working in an oil and gas refining plant