
Levers and indicators to control and track the path of mine cars moving up and down the mine shaft. Note the mine depth indicators would trace paper… this is because the steel cables stretch out over time, so the line length changes with the years.
Levers and indicators to control and track the path of mine cars moving up and down the mine shaft. Note the mine depth indicators would trace paper… this is because the steel cables stretch out over time, so the line length changes with the years.