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Definition of Green sand
1. Noun. An aggregate of sand, bentonite clay, pulverized coal, and water, used in making moulds for metal casting. ¹
¹ Source: wiktionary.com
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1. Noun. An aggregate of sand, bentonite clay, pulverized coal, and water, used in making moulds for metal casting. ¹
¹ Source: wiktionary.com