shaft mucker
1tunnels and underground excavations — ▪ engineering Introduction Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening …
2List of Dirty Jobs episodes — Dirty Jobs is a program on the Discovery Channel, produced by Pilgrim Films Television, in which host Mike Rowe is shown performing difficult, strange, disgusting, or messy occupational duties alongside the typical employees. The show premiered… …
