Mining apparatus and method

Details Mining apparatus and method Mining apparatus and method

1976-06-23

1978-04-04

Purser, Ernest R.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

With mine roof-supporting means

61 45D, 299 43, E21D 1548, E21D 2304

Patent

active

040823601

ABSTRACT:
An articulated ancillary support for a conveyor is attached onto the forward side of a mine roof chock by extensible means which, when retracted towards the chock, shifts the ancillary support from a normal condition in which it occupies an area of relatively wide lateral extent to another condition in which it overlies an area of relatively narrow lateral extent, freeing a large portion of the space under the chocks to clear the way for a retreating continuous miner.

REFERENCES:
patent: 3649078 (1972-03-01), Grebe et al.
patent: 3856356 (1974-12-01), Allen
patent: 3874734 (1975-04-01), Plevak et al.
patent: 4041715 (1977-08-01), Watermann
patent: 4045715 (1977-08-01), Peake

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