Oil worker drilling for oil on rig

industry oil rig oil drill oil worker helmet standing working holding expertise concentration safety drilling oil industry power equipment protection overalls protective workwear power occupation oil field petrol fossil fuel fuel and power generation oil one young man only safety glasses hard hat vertical outdoors day close up waist up front view part of differential focus one person young man 20 24 years petroleum roughnecks platform african american ethnicity black and white work skill safe youngster man male daytime one person only