Keywords
40 to 44 years, 40 to 49 years, adult, alone, black, black color, blur, caucasian ethnicity, check, coal, coal mine, coal miner, coal mining, color, computer, day, device, differential focus, digital device, digital tablet, engineering, environment, environmental issue, excavator, focus, focus on background, focus techniques, fossil fuel, fuel, geology, goods, green, half length, hand held device, handheld computer, hard hat, hard work, heavy industry, heavy machinery, helmet, high visibility clothing, high visibility jacket, holding, industry, issue, labor, land vehicle, landform, looking, machine, male, man, mature adult, mature man, mine, miner, mining, older, one person, orange, orange color, outdoors, overseeing, planning, power, power industry, preparation, protective clothing, protective workwear, reflective, reflective clothing, rock, rocks, safety vest, science collection, scrutiny, single, surface coal mine, surface mine, tablet, technology, transit, transport, truck, using, using digital tablet, vehicle, white, wireless technology, work, working, working hard, stock image, images, royalty free photo, stock photos, stock photograph, stock photographs, picture, pictures, graphic, graphics, fine art prints, print, poster, posters, mural, wall murals, u73852990