Explosive

I think destructive effects of explosives are much more spectacular than their peaceful uses. This is likely to make people forget that explosives are the basis for many of mankind's most constructive efforts. Explosives blast rocks and ores loose in mines and quarries. They also move great masses of earth and break coal into small pieces. In term of explosive, it is a material that produces a rapid, violent reaction when acted upon by heat …showed first 75 words of 523 total…

…showed last 75 words of 523 total…