Recent Submissions

  • Wire rope at Vail

    Dwyer, Charles F.
  • Fixed grip carrier #103 at Steamboat Springs, Colorado

    Dwyer, Charles F.
    Steamboat load test accident; see article Danger-Load Test in Progress (Ski Area Management) by Charles F. Dwyer.
  • Thinly bedded structure of immediate roof

    Arthur Lakes Library; Russell L. and Lyn Wood Mining History Archive; United States. Bureau of Mines
    The thinly bedded structure of a sedimentary rock is shown underground at an unidentified mine.
  • Roof bolts and channels supporting high roof

    Arthur Lakes Library; Russell L. and Lyn Wood Mining History Archive; United States. Bureau of Mines
    Three men stand in a tunnel with a high roof underground at an unidentified mine.
  • Bolted roof in haulage-way

    Arthur Lakes Library; Russell L. and Lyn Wood Mining History Archive; United States. Bureau of Mines
    The image shows roof bolts in a haulage way with two men in a trolley, underground in a coal mine.
  • Roof and ribs at intersection secured with roof bolts

    Arthur Lakes Library; Russell L. and Lyn Wood Mining History Archive; United States. Bureau of Mines
    Roof bolts are shown on the roof of an intersection underground at an unidentified mine.
  • Vertically installed roof bolts at working face

    Arthur Lakes Library; Russell L. and Lyn Wood Mining History Archive; United States. Bureau of Mines
    Two miners stand at a working face of what may be a coal mine. One miner points to the roof bolts.
  • General view of fall of bolted roof

    Arthur Lakes Library; Russell L. and Lyn Wood Mining History Archive; United States. Bureau of Mines
    Rock debris with detached bolts from a rock fall is shown in an unidentified underground mine.
  • Cutting machine in travel-way

    Arthur Lakes Library; Russell L. and Lyn Wood Mining History Archive; United States. Bureau of Mines
    Two miners ride a cutting machine in a travel-way underground. The image shows close views of roof bolts.
  • Failure of experimental roof bolt installation

    Arthur Lakes Library; Russell L. and Lyn Wood Mining History Archive; United States. Bureau of Mines
  • Drilling first of four holes for anchor bolts

    Arthur Lakes Library; Russell L. and Lyn Wood Mining History Archive; United States. Bureau of Mines
    Three miners are shown drilling holes for anchor bolts underground at an unidentified mine.
  • Drilling hole for anchor bolt at end of channel

    Arthur Lakes Library; Russell L. and Lyn Wood Mining History Archive; United States. Bureau of Mines
    Three miners are shown drilling holes for anchor bolts underground at an unidentified mine.
  • Self-propelled, crawler-mounted drill truck

    Arthur Lakes Library; Russell L. and Lyn Wood Mining History Archive; United States. Bureau of Mines
  • Huron Portland Cement Company, coupling and gear-reduction guards on screw conveyors

    Williams, M. L.; Arthur Lakes Library; Russell L. and Lyn Wood Mining History Archive; United States. Bureau of Mines
    The Huron Portland Cement Company began operations on the north shore of Thunder Bay, Michigan in 1901 and was producing cement by 1907. By 1910 it had become the largest cement producer in the world, using limestone quarries around Alpena and Rogers City. The Company was purchased by the Lafarge Corporation in 1986 and continued operations in Alpena.
  • Huron Portland Cement Company, electric locks on main switches

    Williams, M. L.; Arthur Lakes Library; Russell L. and Lyn Wood Mining History Archive; United States. Bureau of Mines
    The Company began operations on the north shore of Thunder Bay, Michigan in 1901 and was producing cement by 1907. By 1910 it had become the largest cement producer in the world, using limestone quarries around Alpena and Rogers City. The Company was purchased by the Lafarge Corporation in 1986 and continued operations in Alpena.
  • Warning sign, Huron Portland Cement Company shop

    Williams, M. L.; Arthur Lakes Library; Russell L. and Lyn Wood Mining History Archive; United States. Bureau of Mines
    A warning sign reading "STOP" extends out at the entrance to shops of the Huron Portand Cement Company. The Company began operations on the north shore of Thunder Bay, Michigan in 1901 and was producing cement by 1907. By 1910 it had become the largest cement producer in the world, using limestone quarries around Alpena and Rogers City. The Company was purchased by the Lafarge Corporation in 1986 and continued operations in Alpena.
  • Key box

    Williams, M. L.; Arthur Lakes Library; Russell L. and Lyn Wood Mining History Archive; United States. Bureau of Mines
    Huron Portland Cement Company began operations on the north shore of Thunder Bay, Michigan in 1901 and was producing cement by 1907. By 1910 it had become the largest cement producer in the world, using limestone quarries around Alpena and Rogers City. The Company was purchased by the Lafarge Corporation in 1986 and continued operations in Alpena.
  • Huron Portland Cement Company, squaring shears

    Williams, M. L.; Arthur Lakes Library; Russell L. and Lyn Wood Mining History Archive; United States. Bureau of Mines
    Screen guards on squaring shears are shown at a machine shop of the Huron Portland Cement Company. The Company began operations on the north shore of Thunder Bay, Michigan in 1901 and was producing cement by 1907. By 1910 it had become the largest cement producer in the world, using limestone quarries around Alpena and Rogers City. The Company was purchased by the Lafarge Corporation in 1986 and continued operations in Alpena.
  • Huron Portland Cement Company, canopy-type hoods over grinding wheels

    Williams, M. L.; Arthur Lakes Library; Russell L. and Lyn Wood Mining History Archive; United States. Bureau of Mines
    Hoods over grinding wheels provide safety for workers and are probably at an operational site of the Huron Portland Cement Company. The Company began operations on the north shore of Thunder Bay, Michigan in 1901 and was producing cement by 1907. By 1910 it had become the largest cement producer in the world, using limestone quarries around Alpena and Rogers City. The Company was purchased by the Lafarge Corporation in 1986 and continued to operate in Alpena.

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