div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=documentillinois-state-geological-survey-welcome-to-isgs-isgs-nnnm-n-626-h-t42-nhtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: Illinois State Geological Survey Welcome to ISGS ISGSnnnm n 626 H T42 N T41 N 230 42 00 629 ND 630 HO 64t:: 39 len oun olf 626 17 co 63 Qr:Ë bA 12 655 24 23 633 loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader033fdocumentsinreader033viewer20220604085f0feea97e708231d4469aefhtml5thumbnails1jpg width=140 height=200 divdiv