Mather B Mine

LETTER FROM STATE GEOLOGIST 03-05-80 STATUS=MINED OUT-- MATHER MINE MARKS PRODUCTION OF 50 MILLIONTH TON OF IRONSKILLINGS MINING REVIEW, V.64, NO.21, 1975, PP.1,12-15-- MATHER BLOCK CAVES 2 MILLION LTPY, ENGINEERING AND MININGNAL, V.175, NO.11, 1974, P.144-- CLEVELAND-CLIFFS MICHIGAN IRON ORE OPERATIONS IN 1974, SKMINING REVIEW, V.63, NO.22, 1974, PP.1,6-- TEN MILLION TON MINES OF THE GREAT LAKES REGION, SKILLINGING REVIEW, V.59, NO.33, 1970, P.27-- PELLETIZING OF NATURAL ORES AT THE PIONEER PELLET PLANT OCLEVELAND-CLIFFS IRON CO, 27TH ANN MEETING, AIME, 1966, PP.1-- CLIFFS PIONEER PELLET PLANT, MARQUETTE IRON RANGE, SKILLIMINING REVIEW, V.54, NO.36, 1965, PP.1,4-5-- CLEVELAND-CLIFFS PROGRAM AT THE MATHER MINE / PIONEER PELPLANT, SKILLINGS MINING REVIEW, V.53, NO.45, 1964, PP.6-7-- VARIOUS REPORTS ON STATISTICS AND COSTS OF MICHIGAN IRONMICH GEOL SUR, 1952, 1954-74-- IRON ORE, AMER IRON ORE ASSOC, CLEVELAND, OHIO, 1959-74-- LAKE SUPERIOR IRON ORES, 2ND ED, LAKE SUPERIOR IRON ORE ACLEVELAND, OHIO, 1952-- HAMMES, J K, THE ECONOMICS OF PRODUCING AND DELIVERING IRPELLETS FROM NORTH AMERICAN TYPE RESOURCES, 27TH ANN MEETING1966, PP.9-16RCF & CMS LISTS 10/81NOT ON 1980 OR 1981 MSHA LISTS; ASSUME PAST PRODUCER# ASSOCIATED WITH MILL, SEQ. NO. 0261039014