Karnatakaregulation Stone Crushers Ordinanc 014
(c) Car tyre. (d) Stone substrate. The surface area of each substrate types was calculated as: concrete tube = 2,488 cm 2; plastic plate 1 = 6,400 cm 2; plastic plate 2 = 7,200 cm 2; and car tyre (size 165/65R14); stone = 250 cm plastic plates and care tyre were black, the stone was dark grey and the concrete tube was .
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