<p><p><h2> Commentary</h2>Typical contract pay items and units of measurement used for blast densification include:<br><ul> <li>Drilling and casing blast holes by the lineal foot.</li> <li>Explosives by the pound.</li> <li>Exploratory drilling by the lineal foot.</li> <li>Mobilization by the lump sum.</li></ul><h2> Cost Information Summary</h2>Very little historical cost information exists for blast densification; the Washington Department of Transportation reported two projects circa 1

<p><p><figure id='attachment_2640' style='max-width:694px' class='caption aligncenter'><img class="wp-image-2640 size-full" src="https://www.geoinstitute.org/sites/default/files/geotech-tools-uploads/…; alt="Diagrams of plan and profile layout of explosive charges for densification of loose sands." width="694" height="416" /><figcaption class='caption-text'> Mitchell, J.K.