SSI2177129: High angle view of four construction workers working at a construction site, American Photographer, (20th century) / Bridgeman Images

SSI2177135: Carpenter sawing a wooden plank using an electric saw / Bridgeman Images

SSI2177137: Low angle view of a construction worker carrying bricks on his shoulder / Bridgeman Images

SSI2177139: Low angle view of a man repairing a chimney / Bridgeman Images

SSI2177144: Young woman standing outside an employment office / Bridgeman Images

SSI2177159: Side profile of a locomotive engineer talking on a CB radio in an engine of a train, American Photographer, (20th century) / Bridgeman Images

SSI2177160: Portrait of a taxi cab driver / Bridgeman Images

SSI2177163: Mature man pulling luggage on a wheelbarrow / Bridgeman Images

SSI2177165: Close-up of a railroad brakeman calling / Bridgeman Images

SSI2177175: Two architects discussing a blueprint / Bridgeman Images

SSI2177183: Low angle view of an electrician climbing on a pole / Bridgeman Images

SSI2176588: Close-up of a young man holding a bankbook and an envelope / Bridgeman Images

SSI2176597: Mid adult woman sitting in an armchair and holding a passport / Bridgeman Images

SSI2176602: Mid adult man holding a bankbook with a mid adult woman embracing him / Bridgeman Images

SSI2176618: Portrait of a female nurse standing with her finger on her lips / Bridgeman Images

SSI2176628: Girl giving a bouquet of flowers to her grandfather sitting in a wheelchair / Bridgeman Images

SSI2176648: Studio portrait of mature man with head in hands / Bridgeman Images

SSI2176649: Close-up of a mid adult woman suffering from a headache / Bridgeman Images

SSI2176650: Businessman sitting on a chair / Bridgeman Images

SSI2176651: Young woman using nasal spray / Bridgeman Images

SSI2176654: Portrait of a young woman suffering from a headache / Bridgeman Images

SSI2176660: Young woman sneezing / Bridgeman Images

SSI2176661: Young woman putting eye drops in her eye / Bridgeman Images

SSI2176667: Close-up of a young woman holding a glass of water and gargling / Bridgeman Images

SSI2176675: Close-up of a senior man with a toothache / Bridgeman Images

SSI2176676: Close-up of a young woman holding a glass of water and gargling / Bridgeman Images

SSI2176680: Young man searching for uranium in a rock with a geiger counter / Bridgeman Images

SSI2176686: Portrait of a businesswoman sitting at a desk and holding documents in an office / Bridgeman Images

SSI2176692: Crane loading coal / Bridgeman Images

SSI2176696: Freight train in front of a coal silo of a paper mill / Bridgeman Images

SSI2176699: Coal miner pushing a cart at the entrance of a pit mine / Bridgeman Images

SSI2176704: Side profile of two coal miners drilling in the wall of a pit mine, Minersville, Pennsylvania, USA, Drilling / Bridgeman Images

SSI2176707: Coal miner operating a cutting machine in a coal mine / Bridgeman Images

SSI2176709: Train in a coal mine, Robena coal mine, Pennsylvania, USA / Bridgeman Images

SSI2176717: Two scientists working in a nuclear laboratory, Brookhaven National Laboratory, Upton, New York State, USA / Bridgeman Images

SSI2176718: High angle view of a synchrotron in a laboratory, California Institute of Technology, Pasadena, California, USA / Bridgeman Images