Industrial engineering and equipment, factories and plants in Saudi Arabia, oil and gas refining plant in the industrial area, steel pipelines and cables, petrochemical industries and projects, pollution resulting from oil production, large and huge warehouses
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
Towers and metal structures in the lands, the renaissance of the Saudi national economy, desert, large and huge warehouses and tanks, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, oil and gas refineries, fuel factories and mines in the Kingdom of Saudi Arabia
Fuel factories 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.
Gas Refinery, Petroleum Engineering Concept in Gulf Countries, Lighting Towers and Metal Structures at Sunset, Large and Huge Warehouses and Tanks in Desert Areas, Petrochemical Projects Contributing to the Revival of the Saudi National Economy, Oil Factories and Plants in the Kingdom of Saudi Arabia
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
The concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, oil and gas refineries, petrochemical industries and projects, towers and metal structures in desert lands.
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
Large and massive storage 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
Oil and gas refinery, lighting towers and metal structures, oil factories and plants in the Kingdom of Saudi Arabia, the concept of petroleum engineering in the Gulf countries, petrochemical industries and projects, the renaissance of the Saudi national economy, large and huge warehouses and tanks
Petrochemical projects contributing to the renaissance of the Saudi national economy, metal and chemical industries, oil factories in the Kingdom of Saudi Arabia, quality of oil production plants and equipment, large illuminated industrial facilities, oil and gas refinery
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
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, lighting towers and metal structures at sunset, oil factories and plants in the Kingdom of Saudi Arabia, the concept of petroleum engineering in the Gulf countries, oil and gas refinery, petrochemical industries and projects, the renaissance of the Saudi national economy
Steel Pipelines and Cables, Petrochemical Industries and Projects, Pollution from Oil Production, Oil and Gas Refinery in Industrial Area, Factories and Plants in Saudi Arabia, Large and Huge Warehouses, Industrial Engineering and Equipment
Oil and gas refinery, 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 sunset, large and huge warehouses and tanks, oil factories and laboratories in the Kingdom of Saudi Arabia
Oil and gas refinery, petrochemical projects contributing to the renaissance of the Saudi national economy, metal and chemical industries, oil factories in the Kingdom of Saudi Arabia, quality of oil production plants and equipment, large illuminated industrial facilities
Petroleum engineering concept, 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
Pipelines and steel cables, Oil and gas refinery in the industrial area, Petrochemical industries and projects, Pollution resulting from oil production, Factories and plants in the Kingdom of Saudi Arabia, Huge and large warehouses, Industrial engineering and equipment
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.
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
The quality of petroleum production plants and equipment, large industrial facilities, oil and gas refineries, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia,
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
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, lighting towers and metal structures at dawn, large and huge warehouses and tanks
Steel Pipes and Cables, Petrochemical Industries and Projects, Panoramic View of Oil and Gas Refinery in Industrial Area, Factories and Plants in Saudi Arabia, Industrial Engineering and Equipment, Large and Huge Warehouses
Large and massive storage 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
Steel Pipelines and Cables, Petrochemical Industries and Projects, Pollution from Oil Production, Oil and Gas Refinery in Industrial Area, Factories and Plants in Saudi Arabia, Large and Huge Warehouses, Industrial Engineering and Equipment
Petrochemical industries and projects, the concept of petroleum engineering in the Gulf States, the renaissance of the Saudi national economy, towers and metal structures in desert lands, large and huge warehouses and tanks, fuel factories and mines in the Kingdom of Saudi Arabia
Petrochemical projects contributing to the renaissance of the Saudi national economy, metal and chemical industries, oil factories in the Kingdom of Saudi Arabia, quality of oil production plants and equipment, large illuminated industrial facilities, oil and gas refinery
The concept of petroleum engineering in the Gulf countries, oil and gas refineries, petrochemical industries and projects, 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
The concept of petroleum engineering in the Gulf countries, oil and gas refineries, petrochemical industries and projects, the renaissance of the Saudi national economy, lighting towers and metal structures at sunset, large and huge warehouses and tanks, oil factories and laboratories in the Kingdom of Saudi Arabia
Oil and gas refinery, lighting towers and metal structures, oil factories and plants in the Kingdom of Saudi Arabia, the concept of petroleum engineering in the Gulf countries, petrochemical industries and projects, the renaissance of the Saudi national economy, large and huge warehouses and tanks
Pipelines and steel cables, Oil and gas refinery in the industrial area, Petrochemical industries and projects, Pollution resulting from oil production, Factories and plants in the Kingdom of Saudi Arabia, Huge and large warehouses, Industrial engineering and equipment
Oil production in Saudi Arabia, view of smoke from factories in the air, huge industrial engineering, equipment and warehouses, close-up of oil and gas refinery at sunset, petrochemical industrial projects, economic growth and progress
Petrochemical projects contribute 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 States, lighting towers and metal structures at dawn, large and huge warehouses and tanks, oil and gas refinery
Saudi national economy renaissance, lighting towers and metal structures at sunset, oil factories and plants in Saudi Arabia, oil and gas refinery, petroleum engineering concept in Gulf countries, large and huge warehouses and tanks, petrochemical industries and projects
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
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, large and huge warehouses and tanks, fuel factories and plants in the Kingdom of Saudi Arabia
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 and gas refinery, petrochemical projects contributing to the renaissance of the Saudi national economy, metal and chemical industries, oil factories in the Kingdom of Saudi Arabia, quality of oil production plants and equipment, large illuminated industrial facilities
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
Modern techniques and technology in oil production in Saudi Arabia. Back view of a Saudi Arabian Gulf Arab businessman wearing traditional thobe and ghutra following the progress of the factory, large buildings with many pipes, Saudi jobs and professions, oil pipeline background
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, large and huge warehouses and tanks, fuel factories and mines in the Kingdom of Saudi Arabia
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, large and huge warehouses and tanks, fuel factories and mines in the Kingdom of Saudi Arabia
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
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
Large industrial facilities for petroleum production, oil and gas refineries, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories and laboratories in the Kingdom of Saudi Arabia, lighting towers and metal structures at dawn, large warehouses and tanks.
The concept of work in the industrial engineering sector, petroleum refining plants in the Kingdom of Saudi Arabia, the quality of machinery and equipment in oil extraction plants, the use of modern technologies in the production of oils and gas.
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, large and huge warehouses and tanks, fuel factories and mines in the Kingdom of Saudi Arabia
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 and gas refinery, petrochemical projects contributing to the renaissance of the Saudi national economy, metal and chemical industries, oil factories in the Kingdom of Saudi Arabia, quality of oil production plants and equipment, large illuminated industrial facilities
Large industrial facilities for petroleum production, oil and gas refineries, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories and laboratories in the Kingdom of Saudi Arabia, lighting towers and metal structures at dawn, large warehouses and tanks.
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
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, the pipeline extending from the sea to refineries
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.
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
Factories and laboratories of the Kingdom of Saudi Arabia, 3D design of an oil and gas refining plant, Dukhan refinery laboratories, petrochemical industries and projects, huge and large warehouses, engineering and industrial equipment, gray background
Large and massive warehouses and tanks, lighting towers and metal structures at night, oil factories and laboratories 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
Pollution from petroleum production, petrochemical industries and projects, steel pipelines and cables, oil and gas refinery in industrial area, factories and plants in Saudi Arabia, large and huge warehouses, industrial engineering and equipment
Follow up the progress of work in factories and plants, a group of Saudi Arabian Gulf engineers working in an oil and gas refining plant, working in the field of petrochemical industries and projects, steel pipelines and cables, the concept of gas productivity in the Kingdom of Saudi Arabia
Follow up the progress of work in factories and plants, two Saudi Arabian Gulf engineers working in an oil and gas refining plant, working in the field of petrochemical industries and projects, steel pipelines and cables, the concept of gas productivity in the Kingdom of Saudi Arabia
Lighting 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
Oil refineries in Saudi Arabia, quality of machinery and equipment in oil extraction plants, use of modern technologies in oil and gas production, concept of work in the industrial engineering sector
Oil factories and plants in Saudi Arabia, Oil and gas refinery, Petroleum engineering concept in Gulf countries, Large and huge warehouses and tanks, Towers and metal structures on the beach port, Petrochemical industries and projects
Modern and distinctive exterior decorations and designs in a modern style, architectural engineering art with huge glass facades, modern advanced exterior construction of engineering arts, buildings and commercial markets in the Kingdom of Saudi Arabia, architectural engineering art and distinctive designs.
Renaissance of the Saudi national economy, black and white photo of oil factories and plants in the Kingdom of Saudi Arabia, oil and gas refinery, petroleum engineering concept in the Gulf countries, large and huge warehouses and tanks, petrochemical industries and projects
Oil and gas refineries, towers and metal structures in desert lands, fuel factories and mines in Saudi Arabia, large and huge warehouses and tanks, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy
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
Renaissance of the Saudi national economy, black and white photo of oil factories and plants in the Kingdom of Saudi Arabia, oil and gas refinery, petroleum engineering concept in the Gulf countries, 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
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 and large warehouses, petrochemical industries and projects, engineering and industrial equipment, factories and laboratories in the Kingdom of Saudi Arabia, oil and gas refining plant in the middle of the sea, Dukhan refinery laboratories.
Towers and metal structures in the lands, the renaissance of the Saudi national economy, desert, large and huge warehouses and tanks, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, oil and gas refineries, fuel factories and mines in the Kingdom of Saudi Arabia
The concept of gas productivity in the Kingdom of Saudi Arabia, monitoring the progress of work in factories and plants, a group of Saudi Gulf Arab engineers working in an oil and gas refining plant, working in the field of petrochemical industries and projects, pipelines and steel cables
The field of petroleum engineering in the Gulf countries, oil and gas refineries, 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, the view of the sky at sunrise with high illuminated structures
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
Petrochemical industries and projects, oil and gas refinery, lighting towers and metal structures, oil factories and plants in the Kingdom of Saudi Arabia, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, large and huge warehouses and tanks
Quality of petroleum production plants and equipment, large industrial facilities, 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
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
Lighting of towers and metal structures at night, large and huge warehouses and tanks, oil factories and plants in the Kingdom of Saudi Arabia, 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, industrial engineering and equipment, petrochemical industries and projects, steel pipelines and cables, oil and gas refining plant in the industrial area, factories and plants in the Kingdom of Saudi Arabia
Large industrial facilities, quality gas production plants and equipment, pipelines and steel cables, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, metallurgy and chemical industries.
Factories and plants in Saudi Arabia, huge and large warehouses, industrial engineering and equipment, petrochemical industries and projects, steel pipelines and cables, oil and gas refining plant in the industrial area
Saudi National Economy Revival, Large and Huge Storage Tanks, Towers and Metal Structures in Desert Lands, Oil and Gas Refineries, Petrochemical Industries and Projects, Petroleum Engineering Concept in Gulf Countries, Fuel Factories and Mines in Saudi Arabia
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
Oil refineries in Saudi Arabia, the concept of work in the industrial engineering sector, the quality of machinery and equipment in oil extraction plants, modern technologies in the production of oils and gas
The concept of petroleum engineering in the Gulf countries, lighting towers and metal structures in the evening, petrochemical industries and projects, renaissance of the Saudi national economy, oil factories and plants in the Kingdom of Saudi Arabia, large and large warehouses and tanks, oil and gas refinery
Steel pipelines and cables, working in the field of petrochemical industries and projects, a group of Saudi Arabian Gulf engineers working in an oil and gas refining plant, following up on the progress of work in factories, the concept of gas productivity in Saudi Arabia, metals and chemicals industries
Follow up the progress of work in factories and plants, a close-up photo of a Saudi Arabian Gulf engineer working in an oil refinery, working in the field of petrochemical industries and projects, steel pipelines and cables, the concept of gas productivity in the Kingdom of Saudi Arabia
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
Oil and gas refineries, petrochemical industries and projects, petroleum engineering concept, renaissance of the Saudi national economy, metal structures in desert lands, large and huge warehouses and tanks, fuel factories and mines in the Kingdom of Saudi Arabia
Gas production concept in Saudi Arabia, side view of a Saudi Arabian Gulf engineer wearing a jacket and a protective helmet working in an oil refinery, monitoring the progress of work in the factories at sunset, working in the field of petrochemical industries, pipelines and steel cables
An oil and gas platform for extracting oils, petrochemical industries and projects, the renaissance of the Saudi national economy, an excavator performing exploration, the quality of machinery and equipment in factories that extract oil wealth from the depths of the sea, the concept of petroleum engineering
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, large and huge warehouses and tanks, fuel factories and mines in the Kingdom of Saudi Arabia
Huge and large warehouses, petrochemical industries and projects, industrial engineering and equipment, factories and plants of the Kingdom of Saudi Arabia, oil and gas refining plant in the middle of the sea, refinery smoke factories
Smoke rising from factory chimneys and polluting the environment, industrial plants in the Kingdom of Saudi Arabia, development industries contributing to the renaissance of the Saudi national economy, large and huge warehouses and tanks, an industrial station with towers and metal structures, reliance on local national production
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
Large and huge warehouses and tanks, lighting towers and metal structures at sunset, the concept of petroleum engineering in the Gulf countries, oil and gas refineries, petrochemical industries and projects, the renaissance of the Saudi national economy, oil factories and laboratories in the Kingdom of Saudi Arabia
Petrochemical projects contributing to the renaissance of the Saudi national economy, metal and chemical industries, oil factories in the Kingdom of Saudi Arabia, quality of oil production plants and equipment, large illuminated industrial facilities, oil and gas refinery
Petrochemical industries and projects in the Kingdom, Extraction of 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 plants in the industrial zone in Saudi Arabia, Saudi economic growth and progress
Pipelines and steel cables, the concept of gas production in Saudi Arabia, monitoring the workflow in factories, a close-up shot of a group of Saudi Gulf engineers working in an oil and gas refining plant, working in the field of petrochemical industries and projects.
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
Industrial engineering and equipment, petrochemical industries and projects, steel pipelines and cables, oil and gas refining plant in the industrial area, large and huge warehouses, factories and plants in the Kingdom of Saudi Arabia
Steel Pipes and Cables, Oil and Gas Refinery Plant in Industrial Area, Factories and Plants in Saudi Arabia, Large and Huge Warehouses, Industrial Engineering and Equipment, Petrochemical Industries and Projects
Smoke rising from factories and polluting the environment, industrial plants in the Kingdom of Saudi Arabia, development industries contributing to the renaissance of the Saudi national economy, large and huge warehouses and tanks, an industrial station with towers and metal structures at sunset, reliance on local national production
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, engineering and urban development of oil refineriesقغ8ةى