Minnesota Public Radio slideshow:
The legacy of the Reserve Mining case
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Phil Cook was a young EPA chemist who pioneered new techniques in X-ray diffraction to study the fibers in Reserve's waste rock. He says scientists still don't know enough about the fibers to make a realistic prediction of the risk they might pose. (MPR Photo/Stephanie Hemphill)

Phil Cook was a young EPA chemist who pioneered new techniques in X-ray diffraction to study the fibers in Reserve's waste rock. He says scientists still don't know enough about the fibers to make a realistic prediction of the risk they might pose.

(MPR Photo/Stephanie Hemphill)
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