2010-03-292010-03-291970https://hdl.handle.net/11299/59901CONTENTS: Summary of activities; Budget; Staff notes; Exploration for base metal sulfides in Minnesota; Highlights of Minnesota’s mineral production—1969; Projects; State geologic map atlas project; Minnesota’s topographic mapping program; State gravity map project; Publications 1969-70; George Melvin Schwartz Geological Survey Fund; Hydrologic study of proposed Ham Lake airport site: 14 p.en-USNewsletter or Bulletin