TY  - RPRT
TI  - Computer-aided estimates of concentrating grade iron resources in the Negaunee Iron-Formation, Marquette District, Michigan
AU  - William F. Cannon
AU  - Sandra L. Powers
AU  - Nancy A. Wright
PY  - 1976
DO  - 10.3133/ofr76426
UR  - https://pubs.usgs.gov/publication/ofr76426
ID  - ofr76426
ER  -