[Untitled photo, possibly related to: Shipyards at Bethlehem steel mill. Sparrows Point, Maryland]. Sourced from the Library… https://www.rawpixel.com/image/12284241/photo-image-person-sky-public-domainFree Image from public domain license[Untitled photo, possibly related to: Shipyards at Bethlehem steel mill. Sparrows Point, Maryland]. Sourced from the Library… https://www.rawpixel.com/image/12284206/photo-image-person-sky-technologyFree Image from public domain licenseGold miner. El Dorado Canyon, Clark County, Nevada. Sourced from the Library of Congress. https://www.rawpixel.com/image/12275357/photo-image-person-sky-goldFree Image from public domain license[Untitled photo, possibly related to: Preparing to drill an oil well in Goodrich field of Continental oil company. Valley… https://www.rawpixel.com/image/12248653/photo-image-person-technology-public-domainFree Image from public domain license"Making a trip," pulling up old pipe to change bit on drilling pipe on the bottom of oil well at C.C. Graber pool of… https://www.rawpixel.com/image/12248651/photo-image-person-sky-public-domainFree Image from public domain licenseMany families tore down their houses in the Santee-Cooper Basin to rebuild them outside the area. Near Bonneau, South… https://www.rawpixel.com/image/12324513/image-person-sky-public-domainFree Image from public domain licenseNew York, New York. Installing the defense bond sales photomural, prepared by the Farm Security Administration, in the… https://www.rawpixel.com/image/12322686/image-person-public-domain-factoryFree Image from public domain licenseLaguna Dam. The All American Canal, when completed, will extend desert land to cultivation by irrigation in the southwestern… https://www.rawpixel.com/image/12245469/photo-image-person-sky-mountainFree Image from public domain licenseWashington, D.C. Steam hammer used to drive piles. Sourced from the Library of Congress. https://www.rawpixel.com/image/12323930/image-steam-technology-public-domainFree Image from public domain licenseWashington, D.C. Row of piles being driven in a trench. In the foreground are rows of stakes that indicate where other piles… https://www.rawpixel.com/image/12323635/image-person-public-domain-architectureFree Image from public domain licenseLaying sewer tile leading to the sewage disposal plant now under construction. There are two miles of this large-size tile.… https://www.rawpixel.com/image/12144958/image-plant-person-artFree Image from public domain license