flotation of stibnite with high lead content in puerto rico

The Collazo Floating Strainer Model CFS-S-1 was invented by Angel Torres Collazo, president of Collazo Electrical Contractors, Inc. The equipment, U.S. patent number 7,241,384 B1, has the ability to float, allowing it to take clean water near the surface. It has a system of mesh throughout its periphery suspended under the flotation tanks.

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