Stay updated with breaking news from Dawson mine. Get real-time updates on events, politics, business, and more. Visit us for reliable news and exclusive interviews.
A case study of a deep-seated spoil lowwall instability controlled by a classical active- passive wedge mechanism at Anglo American Metallurgical Coal’s Dawson Mine is presented. Following a truck dump extension, widespread displacements were identified during conventional single forward pass de-coaling of Pit 6-8 strip E15. New through-spoil drilling, downhole geophysical logging, and XRD analysis identified a moisture-sensitive tuffaceous claystone unit containing a high proportion of medium-high swelling, mixed-layer illite-smectite clays 11-12 m below the lowwall floor. A novel soil mechanics approach was used to determine the mechanical properties of the tuffaceous claystone for which conventional rock mechanics tests could not be applied. Three-dimensional numerical modelling was then undertaken in FLAC3D to: a) validate the characterised mechanical properties; b) determine appropriate buttress slot widths for retreat mining of strip E16; and c) provide a validated base case fo ....
/CNW/ - Zephyr Minerals Ltd. ("Zephyr" or the "Company") (TSXV:ZFR) (OTC:ZPHYF), is pleased to announce that through its wholly owned Zimbabwean subsidiary. ....
Press Release - MINING.COM mining.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from mining.com Daily Mail and Mail on Sunday newspapers.
Minerals Council of Australia launches new phase of More to Mining campaign worldcoal.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from worldcoal.com Daily Mail and Mail on Sunday newspapers.
A significant number of mining service contractors from across the region are involved in the planned maintenance program, which involves electrical, mechanical and structural repairs. ....