Sluice Boxes and Kate Kate for scale. Powder that passed the floatation level was flowed over sluice tables, another mass-based way of separating gold. I’ve never seen so many of these in one place. Though it was a hardrock mine, it worked more like a placer mine. Similar Images ...based on the tags: HDR, machinery, people, quarantine, sluice... Where the drain changes shape from round concrete to arched brick. Copper poured from this furnace and was cast by the autocaster on the right into billets. Blondes und bricks! Made by the Mergenthalen Linotype Company of New York, this model series (300) was introduced in 1960 and boasted a 12-line-per-minute reproduction rate. A natural stone floor in Brewery Creek’s upper path has been worn smooth. SWP4-A on the left and Viterra C on the right in a 90-degree panorama. Play on, Hunter. (Two keys worked on this thing.) Tucked-into the side of the concentration mill… these machines were meant to crush underground rock into a fine dust for mineral extraction. This machine was last overhauled in February 1955, and last turned out Crepe silk, probably dress material.