Ключевые слова: alone, business, chemical, drilling, energy, engineer, engineering, equipment, factory, fuel, gas, gasoline, hard hat, helmet, hispanic, industrial, industry, job, maintenance, man, manager, metal, oil, outdoors, person, petrol, pipe, pipeline, pipelines, platform, power, production, protective, pump, refinery, reflective, rig, safety, silhouette, sky, standing, storage, supervisor, tank, technician, technology, watching, work, worker, young,