entrepreneur in mining in North and South America, 1930s to 1990s
By: James M. Orr ; with an introduction by James Jensen and Bernard Brynelson. Interviews conducted by Eleanor Swent in 1994. Regional Oral History Office, The Bancroft Library, University of California, Berkeley,
Contributors: Jensen, James.; Brynelson, Bernard.; Swent, Eleanor.; Bancroft Library. Regional Oral History Office.
Published: 1995
Subjects: Orr Engineering and Chemical Company.; Spectrograph.; Mining engineers -- Interviews.; Mines and mineral resources -- West (U.S.); Diamond mines and mining -- Brazil.
Other titles: Western mining in the twentieth century oral history series.
Description: James Orr discusses growing up in British Columbia, using the spectrograph as a consulting engineer, mining diamonds in Brasil, and forming the Orr Engineering and Chemical Company.