div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=documentpubsusgsgov-2897-lei-2-3297-1902-3697-1923-elevat-ion-final-process-ihtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: pubsusgsgov · 2897 lei 2 3297 1902 3697 1923 elevat ion • final process i ng usgs 3297 18031 1832 200 400 time ve 497 547 597 297 867 2097 1301 2497 14-82 ae97 1673 loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader031fdocumentsusreader031viewer20220219115c40f0f893f3c338c3289c3chtml5thumbnails1jpg width=140 height=200 divdiv