div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=us-geological-survey-publications-warehouse-pmi-45-30-30-046-20-r-30-45-35-feethtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: US Geological Survey Publications WarehousePmi 45 30 30 046 20 r 30 45 35 FEET edited and published by the Geological Survey USGS USCGS and Intérnat onal Boundary 1970 GEOLOGIC loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentsusreader033viewer2022052614607432f0813ae336070763d8html5thumbnails1jpg width=140 height=200 divdiv