USGS Multimedia Gallery
Title: Prototype Nolan Hammer
Description: A standard tool of hard-rock geologists, this long-handled, medium weight hammer-shaped sledge is called a Nolan hammer. Thomas Brennan Nolan (1901-1992) worked as a geologist and served as seventh Director of the U.S. Geological Survey from 1956 to 1965. Nolan developed this hammer in the early 1930s while doing field studies in what is now the Boulder (Lake Mead) Nevada area. The head weighs 3.7 lbs. Object ID: USGS-000732
Location: Reston, VA, USA
Date Taken: Jul 14 2009
Photographer: Justin Bongard , U.S. Geological Survey
Usage: This image is public domain/of free use unless otherwise stated. Please refer to the USGS Copyright section for how to credit the photo.
USGS Museum Collection
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