div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imagea href=https:reader042fdocumentsinreader042viewer20220412205e0943b01c00691d652906eahtml5page1jpg target=_blank img data-url=documentpubsusgsgov-united-states-department-of-the-interior-67k-saso-600-u-r-ri-stnhtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: pubsusgsgov · UNITED STATES DEPARTMENT OF THE INTERIOR 67k saso 600 u r-ri stón Pass BECK TUNNEL NO MINE 6 ego 11200530 600 700 BULLETIN 1135-B PLATE 2 loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader042fdocumentsinreader042viewer20220412205e0943b01c00691d652906eahtml5thumbnails1jpg width=140 height=200 adivdiv