000			01086nam a2200205 4500
001			0000002590
008			111024 19uu eng d
040			_aJMGHQ
090	0	0	_a551.09595114 _bAWP
100	1		_aAw, P.C.
245	1	0	_aWing Sang Cheong Tin Mine, Ipoh, Perak _ba case study of mining and quarrying on the same site _cP.C. Aw.
260			_c1983
300			_a16 p. _bill. , photos, maps _c30 cm
500			_aFebruary, 1983
520			_aThis is an example of optimum exploitation of non - renewable resources. A sub-economic tin deposits is being successfully exploited by turning the (waste) country rock into saleable construction aggregates and extracting the sparsely distributed tin ore. Granite quarrying such as this, not only provides an alternative to limestone aggregates, but also indirectly helps to conserve limestone hills for better uses. Furthermore, in the Kinta Valley, in places, granite quarrying may uncover hidden tin lodes.
650		0	_aGeology, Economic
650		0	_aCassiterite
650		0	_aRocks, igneous
651		0	_aIpoh (Perak)
999			_c22526 _d22526