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Archive for January 24th, 2019

Originally published in The Seattle Daily Times, January 24, 1915

Pacific Coast Company now using South Prairie products in plant

Diamond BriquetsFollowing the successful introduction of Black Diamond coal briquets, the Pacific Coast Coal Company has just placed upon the market a new briquet, made from the coal of the South Prairie mines. Both kinds of briquets are the product of the company’s $225,000 briquetting plant, completed just a few months ago at Briquetville, on the south shore of Lake Washington.

The coal is ground fine, washed, heated, and mixed with liquid asphalt; then stamped into briquets under a pressure of more than two tons to the square inch. In briquet form the fine furnace coal is adapted much better to household use.

Each Black Diamond briquet is marked with a diamond, and each of the new South Prairie briquets with an “N,” as a distinguishing mark.

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