© Apprentice lathe operator in engineering section of aircraft maintenance works

© Apprentice lathe operator in engineering section of aircraft maintenance works

© Apprentice lathe operator in engineering section of aircraft maintenance works

© Large aircraft jet engine in aircraft maintenance hangar

© Large aircraft in aircraft maintenance hangar

© Large aircraft in aircraft maintenance hangar

© Portrait of mold maker in iron foundry

© Iron foundry worker in iron foundry

© Molten iron being poured from furnace in iron foundry

© Workers pouring molten iron from furnace in iron foundry

© Bixby Creek Bridge amidst mountains against sky

© Tower Bridge over Thames River against cloudy sky in city at dusk

© High angle view of Dom Luis I Bridge over Douro River against sky in city during sunset

© Illuminated Albert Bridge over Thames River against sky at night

© High angle view of Sarasin Bridge over sea in city

© Low angle view of Manhattan Bridge over East River against clear sky in city

© Low angle view of Manhattan Bridge over East River against sky in city

© Low angle view of Blue Water Bridge over Saint Clair River against clear sky during sunset

© Low angle view of Eiffel Tower against sky

© Golden gate bridge over San Francisco Bay against sky

© Low angle view of American flag on Brooklyn bridge against clear sky

© Illuminated Clark Bridge over river at night

© Clark Bridge over frozen river against sky

© Gateshead Millennium Bridge over river against sky

© Illuminated Gateshead Millennium Bridge over river against sky