Larkspur Mine - lower adit entrance stope
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Contributor:
360Cities.net / Alamy Stock PhotoImage ID:
PN5H0DFile size:
616.3 MB (47.9 MB Compressed download)Releases:
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20756 x 10378 px | 175.7 x 87.9 cm | 69.2 x 34.6 inches | 300dpiPhotographer:
William lMore information:
A view of a large stope room in Nevada's Larkspur Mine, a long defunct silver mine from the late 1800s that has multiple adits, however there are two main ones that have significant workings, of which include a multitude of stopes, ore chutes, raises, & winzes, not to mention a few false floors as well that could be fatal. Here facing the entrance portal to the lower adit is this large stoped room w/ several passageways, including one that leads straight down. Another false floor covered with floor boards lies nearby. Look on the ground to see plenty of bags of crushed ore samples left behind. A few mining terms: Adit A horizontal passage leading into the mine, not to be confused w/ a "tunnel", which would have an opening out the other side. Adits are sloped slightly upwards to allow for drainage of groundwater. Crosscut A horizontal opening that does not run along the vein. Typically a shaft will lead to crosscuts at each level that give access to drifts along the vein. Crosscuts typically run straight as an arrow through worthless rock. Drift A horizontal opening that runs along the vein. Typically there are many ore chutes from stopes above, and the drift will wander to follow the vein. Level If you follow a ladder down a shaft, you will arrive at horizontal workings every 100 feet or so, and these are called levels. The levels have a station near the shaft, and are named by the distance down the shaft. Manway Any kind of passage with a ladder in it could be called a manway. Shafts are divided into "compartments" and one of these is very often a manway. Sometimes the manway of a shaft is crowded with pipes and cables and such. Ore chute A "spout" built of wood used to load broken rock from above into waiting ore bins. Raise A raise is like a shaft that starts undergound and goes upwards. Typically a ladder next to an ore chute along a drift goes up a raise and gives access to a stope above. Square set stoping (timbering) Th