Info

Date: 4/16/15
Desk: BIZ
Slug: RETIRING
Assign Id: 30173461A

Retired 3M electrical engineer Bob Nepper, 82, has a garage in his North St. Paul, Minnesota home filled with devices and tools he has designed and built over the years. Much of his work has been focused on water pasteurization. This is a thermostatic valve for use with his Solar Pasteurizer panel design. The panels proved too expensive to manufacture and are in storage in the garage.

Photo by Angela Jimenez for The New York Times
photographer contact 917-586-0916

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RETIRING-04.JPG
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Angela Jimenez
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2015-04-16-Bob Nepper
Date: 4/16/15<br /> Desk: BIZ<br /> Slug: RETIRING<br /> Assign Id: 30173461A<br /> <br /> Retired 3M electrical engineer Bob Nepper, 82, has a garage in his North St. Paul, Minnesota home filled with devices and tools he has designed and built over the years. Much of his work has been focused on water pasteurization. This is a thermostatic valve for use with his Solar Pasteurizer panel design. The panels proved too expensive to manufacture and are in storage in the garage.<br /> <br /> Photo by Angela Jimenez for The New York Times <br /> photographer contact 917-586-0916