Powder and Bulk Engineering
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Publication Date: 06/2009
Pages: 4
PDF Format
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Compact dust collector delivers full-size results

A rock and sand company installs two compact high-performance dust collectors in its screening operation to ensure compliance with state dust emission standards.

Holliday Rock, Upland, Calif., operates 14 facilities that produce concrete, asphalt, and aggregate for use in construction projects throughout San Bernardino, Riverside, Los Angeles, Kern, and Orange counties. The company’s Palmdale facility near Littlerock, Calif., produces ready-mix concrete, hot-mix asphalt, and aggregate. The facility excavates rock and sand from a surface pit and then crushes, screens, and classifies the material into sizes ranging from rock dust up to 3/4-inch aggregate for use in making the various products. In summer 2008, the facility decided to replace its screening operation’s two old baghouse dust collectors to ensure compliance with California Environmental Protection Agency (Cal/EPA) and Air Quality Management District (AQMD) dust emission standards.

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