zIt is obvious that shuttle car conveyance is a batch, discontinuous process which reduces the overall production rates achievable from a continuous miner as a result of the inter car wheeling delays. Extendable or flexible conveyor systems reaching from the tail end of the panel conveyor to the continuous miner […]

The BLS were originally pioneered in the RSA at Middlebult Colliery by Voest-Alpine commencing in 1984 and later trialled in several Australian collieries commencing in 1987. Their subsequent use in pillar extraction panels has become widespread with some 60 units in operation by 1991. A BLS units is illustrated to […]

Technical specifications of Pneumatic and Hydraulic roof bolting rigs   ALMINCOGopher CRAM Wombat FIREFLY INTFire Fly HYDROMATICARO-4000 SIGHBM 50 ALMINCOBeaver Mode of power Pneumatic Pneumatic Pneumatic Hydraulic Hydraulic Hydraulic Range (m):smallest (3 Stge)largest (3 Stge) 0.771 – 1.2271.374 – 3.657 0.442 – 0.7591.347 – 3.539 1365 – 32531145 – 2793 […]

out 150 m. By back spooling of cables from an intermediate cable anchorage point the operational reach can be doubled but this may result in reduced cable life and is usually used only for specialised drivages. To avoid cable tangling as the cars are usually used in pairs with a […]

In underground mining, first and foremost in the modernization process are the machines that extract coal: primarily the continuous and longwall miners. First introduced in the late 1940’s, continuous miners provided a quantum leap in the speed and efficiency of extracting coal. Modern versions operate on basically the same principal […]