Frank Gehrke, a scientist with the state Department of Water Resources, hauls a sled loaded with 60 pounds of equipment .  March 6to Gin Flat in Yosemite school.
Frank Gehrke, a scientist with the state Department of Water Resources, hauls a sled loaded with 60 pounds of equipment . March 6to Gin Flat in Yosemite school. TPN
Frank Gehrke, a scientist with the state Department of Water Resources, hauls a sled loaded with 60 pounds of equipment . March 6to Gin Flat in Yosemite school. TPN

Scientists know Sierra carries state's fate on its snowy slopes

March 13, 2008 04:00 AM

UPDATED March 13, 2008 10:36 AM

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