41. As an open cast quarry, this method of quarrying provides quicker extraction of raw block dimension stone whilst maintaining its integrity. 42. The techniques used for the extraction of tin from Dartmoor followed a progression from streaming through open cast mining to underground mining. 43. The organisation supports the Save Happy Valley Campaign against the open cast mining of coal being developed on Department of Conservation land. 44. Most of the material recovered from this open cast site came from surface finds along with a to core of Neolithic deposits. 45. A small captive explosive manufacturing factory was established at Sitarampur for the supply of dynamite for solid blasting in open cast mines. 46. Paradoxically open cast mining has become widespread in the area around Arbuckle and the western extremity of the line, obliterating its course. 47. The landscape at the northern end of the A4061 has been extensively used for open cast mining, which remains an active industry. 48. The power plant's adjacent open cast brown coal mine has more than 30 years of reserves, which are included in the acquisition. 49. Brajrajnagar is an industrial town, being of the prime location for Open Cast Coal Mine of Ib Valley Coalfield of Mahanadi Coalfields Limited. 50. It is covered by woodland for the most part, although there is an open cast quarry ( for stone aggregates ) in use.
