div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imagea href=https:reader040vdocumentinreader040viewer20220309105b5a4c577f8b9a905c8ba807html5page1jpg target=_blank img data-url=pubsusgsgov-department-of-the-interior-united-states-geological-survey-110000htmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: pubsusgsgov · DEPARTMENT OF THE INTERIOR UNITED STATES GEOLOGICAL SURVEY 110000 1 900 580000mE 49000 r 50 160 60 }SHDRFT Prepared in cooperation with MONTANA BUREAU OF MINES loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader040vdocumentinreader040viewer20220309105b5a4c577f8b9a905c8ba807html5thumbnails1jpg width=140 height=200 adivdiv