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Glistening Black With Broad:
Range: Southern half of Canada south through most of United States with exception of southern Florida and Coastal Plain
Description: Fairly large, heavy-bodied; head small, legs short; tail large and bushy; claws of forefeet developed for digging; glistening black with broad, white stripe from nape to shoulder, then continuing to base of tail as pair of lateral stripes; narrow white stripe along nose to nape patch; tail black and white; reaches length of 30 inches including y%-inch tail; may weigh 10 poundsRange: Worldwide in tropical and temperate regions Description: Typical wild birds gray with whitish rump, 2 black bars on secondary wing coverts; broad black band on tail; feet red; domestic birds gray, tan, black, white, and mixtures of varieties; length 13 inches.
The liquefaction of some compounds during the burning process causes the charge to agglomerate into nodules of various sizes (usually a/4 to 1 inch in diameter) that are characteristically black, glistening, and hard. This material is known as portland cement clinker. The charge drops from the end of the kiln into some form of cooler and is then ground, usually with 4 to 5J gypsum (hydrous calcium sulfate), to a powder so fine that most of it will pass through a sieve that will retain water.
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