View Single Post
  #152  
Old 30-01-2022, 10:30 AM
Coquet's Avatar
Coquet Coquet is offline
Administrator
 
Join Date: Feb 2010
Location: Amble
Posts: 3,253
Default

Quote:
Originally Posted by hollydog View Post
That is really interesting.Have you a picture of the drill bit?
How did the guys on the surface know when to stop in order to let the men underneath clear away the rock ?
I'm not sure how they worked it, If I recall correctly they had an 'Eimco Shovel' (small electric bucket loader) up there. Probably just let a big heap develop 'til it reached the roof then start clearing it as the shaft bottom filled up?

Here's a bit being attached in some Turkish mine, and one reaching the surface

And a nice animation of the process
Reply With Quote