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Ceramic Mills in a Paint Mixer for Preparation of Multiple Rock Samples

Volume 14, Number 5 (Oct. 1960) Page 136-138

Myers, A.T.; Wood, W.H.

The U. S. Geological Survey has been interested for some time in how rocks became contaminated by trace elements during grinding before analysis. Elimination of contamination is especially important in emission and x-ray spectrochemical analysis.