Bernhard Peucker-Ehrenbrink, a geochemist at WHOI, cuts paper filters to begin anaylses of WHOI geologist Ken Sims' samples gathered from Masaya. Peucker-Enhrenbrink, Sims (center), and laboratory assistant Tracy Atwood, wear protective clothing, masks, and gloves to prevent contamination of the samples. (Photo by Tom Kleindinst, Woods Hole Oceanographic Institution)[back]
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