| http://www.w3.org/ns/prov#value | - A further modification of the invention applies the graphite material to all of the surfaces of the tiles 23 or runners 18 or other similar refractory shapes by submerging the tiles, runners, and other refractory shapes in the liquid carrier suspension of the graphite for a time sufficient for the penetration of the several surfaces of the refractory shapes to occur and the formation of a smooth c
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