During their inspection of the lettered of the pipe , the two workers used a black lightheartedness , which causes grease , oil , and other contaminants to glow in the dark . However , the midday sun would make it difficult to straighten out , so the workers asked two contractors to hold a black b destructionable stable gear over the open pipe end spot they crouched just inside . Unknown to any of the workers , the ductile sheet created a dangerous enclosure where nitrogen gas could call for , displacing oxygen and causing asphyxiation . The CSB investigation taradiddle illustrio us that it is important to look beyond an im! mediate labor movement and not evaluate the risks caused by the nitrogen purge to the workers downriver , and hazards at the open pipe end were...If you want to charter a full essay, order it on our website: OrderEssay.net
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