div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=documentusgs-calicata-dump-escornbrera-underground-workings-trabajos-subterrneos-tu-tuhtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: USGSCalicata Dump Escornbrera Underground workings Trabajos subterráneos tu tu tu tu Spring 50 200 100 20 600 Feet Pies 100 Meters Metros Contour 20 feetdatum assumed base de las loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader035fdocumentsnetreader035viewer2022071414610cdcde4068e3337a2a4b84html5thumbnails1jpg width=140 height=200 divdiv