-
impressive use of
raise boring is the 7.1 m
diameter shafts for Sasol's
Middelbult and
Bosjesspruit Mines in
South Africa. The
boxhole borer (or machine...
-
mining operations continue in the
Secunda area (Bosjesspruit, Brandspruit,
Middelbult, Syferfontein, and
Twistdraai collieries) and Sigma:
Mooikraal colliery...
-
developed around a coalfield. The four coal mines,
namely Brandspruit,
Middelbult, Bosjesspruit, and Twistdraai, form the
largest underground coal mining...
-
Colliery near Vryheid, Kwa-Zulu
Natal 53
deaths on 13 May 1993 at
Middelbult colliery.
Middelbult colliery was and is
still one of the
underground collieries...
