div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=documentsilica-dust-in-an-coal-piedrahta-h-vanegas-e-gonzlez-icoh-hugopiedrahitacerrejoncomhtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: SILICA DUST IN AN COAL Piedrahíta H Vanegas E González icohconfexcomicoh2012webprogramHandoutid199FP582_A1563pdfhugopiedrahita@cerrejoncom A study was carried loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader034fdocumentsusreader034viewer20220503035f6c0a359a681937e97285a3html5thumbnails1jpg width=140 height=200 divdiv