The report is designed to provide current, accurate, and technically reliable information about Alaska's mineral industry. The report depends on the cooperation of individuals, private industry, and government agencies to provide information on their mining projects and activities.In 1990 the sum of expenditures for exploration and development, and the estimated value of production totaled $61 0.6 million. Exploration expenditures rose to $63.3 million, with most of the effort concentrated on hardrock gold projects, some of them in advanced stages. Development expenditures were $14.3 million, considerably less than the $134.3 million in 1989, mainly due to completion of development at the Red Dog1 and Greens Creek mines.Value of mineral production in 1990 was $533 million, doubling the 1989 production value of $277 million.In 1990, with 55 percent of the nation's supply, Alaska led the United States in zinc production. Consequently, U.S. net import reliance for this crucial commodity decreased from 61 to 48 percent.Alaskan silver production accounted for about 18 percent of the domestic mine production. Only Idaho and Nevada produced more.Alaska continues to have the nation's largest placer gold mining industry, which provides jobs to many rural Alaskans.Significant progress in land reclamation and water quality at placer mines indicate that Alaska's mining industry is capable of providing economic diversity and environmentally sound operations in the 1990s.'Names of significant mines and deposits appear in boldface type throughout this report.. . I ICONTENTS m m n n w n t~t t~~m t t n m t n t ! t~~n t t t n n m n n~m t n n m m m m m m~m n m~m m m m
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