Видео с ютуба Downcast Shaft

#cage coming to surface from Underground mine by #downcast shaft #undergroundmining #cage winding

Motive Column || Upcast shaft & Downcast shaft || kelvin= ? + ⁰C || Mining || MiningSYNC

Upcast and downcast shaft explained

*Downcast

How Natural Ventilation Work in UG Mine|| By Rohit sir||✍️✍️✍️

A Last Look at Houghton Colliery Site (April 2023)

Vertical Shaft Sinking Machine (VSM)

Snibston Colliery Remembered.

Houghton Colliery: Hunting for the 3rd Shaft

Crumlin Navigation Colliery

Genmitsu MRBC08 End Mills CNC Router Bits, for Carving Aluminum, Metal, Plastic, MDF & Wood

Video – Local history – Seaham No 2 Coal Mine

Retreat roof fall underground coal mine

Cynheidre Colliery Remembered.

ABANDONED 20TH CENTURY PENALLTA COLLIERY SOUTH WALES

Brattice installation