| http://www.w3.org/ns/prov#value | - With greater particularity to the molding operation, and with additional reference to FIG. 2A, the dry components from which the block will be formed, the ingredients and consistency of which will depend upon the ultimate use but can include such materials as cement, sand, cinder, pumice, gravel, aggregate, pigment and the like, are maintained in dry storage area 31 and conveyed to mixer 32 by con
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