Keywords
40's, 40-45, 40-50, 40s, 45-49 years, 45-50, 50-55, 50-60, 55-60, abilities, ability, accuracy, accurate, accurately, accurateness, adult, adults, apparati, apparatus, apparatuses, beings, business, caucasian, caucasians, color, color image, colored, colors, colour, coloured, colours, commerce, concentrate, concentrated, concentrates, concentrating, concentration, engineer, equipment, europe, european, expert, expertise, experts, factories, factory, fellow, fellows, fifties, fifty, focus, focused, focuses, focusing, forties, forty, gentleman, gentlemen, gray, gray hair, grays, grey, grey hair, grey hairs, greys, guy, guys, hair, hearing protection, held, hold, holding, holds, horizontal, horizontally, horizontals, human, human being, humans, indoor, indoors, industrial, industrial plant, industrial plants, industrialization, industrializations, industrialized, industries, industry, inside, know-how, looking down, machine, machineries, machinery, machines, male, males, man, man's, manufacture, manufactured, manufactures, manufacturing, manufacturing plant, manufacturing plants, mature adult, mature men, men, men's, mid life, middle age, middle aged, middle-age, middle-aged, one, one person, operate, operated, operates, operating, part, parts, people, person, persons, photographic, photography, plant, plants, polished, polisher, polishers, polishes, polishing, polishings, precise, preciseness, precision, prep, preparation, preparations, prepare, prepared, preparedness, prepares, preparing, prepped, prepping, profile, profiles, protect, protected, protecting, protection, protective eyewear, protects, redying, rub, rubbed, rubbing, rubbings, rubs, safe, safety, safety glasses, scrutiny, security, selective focus, serious, seriously, seriousness, side view, side views, side-view, side-views, skill, skilled, skills, solemn, solemnly, somber, standing, steel, stood, technique, techniques, toil, toiled, toiling, toils, trade, trades, use, uses, using, waist up, waist-up, western european, work, worked, working, works, 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, u12901836