This paperpresents afracturemechanicsmodelofsmoothblastingandpre-split blasting, analyzes the functionofstresswaves and quasi-staticpressureof explosionin blasting process.
At 8:20 p.m. on the day of the explosion the pressure data suggest there was a constant flow of sea water being pumped into the drill pipe that was displacing the heavier mud system which was the primary pressure control for the well.
Officials said a circuit board and battery pack - parts of a triggering mechanism - had been recovered and the lid of a pressure cooker, apparently blown off during the explosion, was found on the roof of a nearby building.
The explosionof federal debt has increased pressure on politicians to decide which functions of government are indispensable and which should be dialed back.