U.S. Department of the Interior, Bureau of Mines, Branch of Procurement, P.O. Box 18070, Cochrans Mill Road, Pittsburgh, PA 15236-0070

A -- DEVELOP A VIRTUAL IMPACTOR BASED PRECLASSIFIER FOR RESPIRABLE DUST MONITOR Contact Point, Louis A. Summers, (412) 892-6834; Contracting Officer, Larry E. Guess, (412) 892-6826. The Bureau of Mines is negotiating a modification to existing Cooperative Agreement 1432 CO240007 with the Particle Technology Laboratory of the University of Minnesota to Adapt Long Sample Time Virtual Impactor Technology for Use as a Preclassifier for the Machine Mounted Continuous Respirable Dust Monitor (MMCRDM). The cooperator will be involved in the design, construction and testing of a respirable sample inlet, transport path, preclassifier and referee sampler for a pre-production prototype MMCRDM. The work is a continuation of the effort begun on August 1, 1994. This notice is for informational purposes only. A solicitation is not available. (081)

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