Kingsbury (later called Banner) Placer hydraulic mining operations in Iowa Gulch near Breckenridge, Colorado. Circa early 1900s. On the bank above are wooden buildings and log cabins surrounded by piles of stacked logs. A buck and rail (or buck and pole) livestock fence climbs the hillside next to a split rail fence corral.

Hydraulic mining at Kingsbury Placer (later called Banner Placer) in Iowa Gulch, northwest of Breckenridge, Colorado. Men stand by as a hydraulic pipe with high pressure nozzle, called a "Giant", forcefully directs water at the hillside. A wooden sluice carries water above piles of discarded rock and small tree branches.

Kingsbury (later called Banner) Placer hydraulic mining operations in Iowa Gulch near Breckenridge, Colorado in 1909. Called "booming", the headgate is opened to allow water from the reservoir above to pour over the deep gravel banks, washing gold bearing gravel. Below, a man operates a "Giant" (a hydraulic pipe with high pressure nozzle) to further erode the hillside.

Hydraulic mining operations at the Kingsbury Placer (later called Banner Placer) in Iowa Gulch near Breckenridge, Colorado. Circa 1909. A man, probably the manager or a member of the pit crew, looks at the wooden sluices carrying water through the gravel banks below while a horse and buggy wait on the high bank above.