Msha explosives - Study guides, Class notes & Summaries

MSHA Explosives | 88 Questions and Answers | 100% Verified

Why is the use of explosives important to our economy? - correct answer -Drilling & blasting is the least expensive way of breaking solid rock. -If it's hard rock, you have to use explosives to break it so you can economically mine it. -If we didn't have explosives, many raw materials would be very expensive. On average, how much explosives does the United States use every year? - correct answer ...

Match the following event to its cause in the fragmentation process. - correct answer Fractures extend to free face → Gas Pressure Crushing and grinding in moving of muckpile → Secondary Fragmentation Crushing around the hole → Shock Wave Rotation of fragments → Momentum Who invented the blasting cap? - correct answer Alfred Nobel Who invented dynamite? - correct answer ...

Zeolite - correct answer Water purification Vermiculite - correct answer Horticulture Rare earth elements - correct answer computers Trona - correct answer Glass Granite - correct answer countertops Phosphate - correct answer ...