History
A pneumatic tool is first thought to have been used for rock drilling in 1844. Mr Burton invented a "wind hammer" for boring holes in mines.
1951: Halco, in collaboration with Stenuick of Belgium, developed the first DTH hammer, which had an operating air pressure of 100 psi.
1953: Halco DTH drill rigs introduced.The first-ever DTH blast using Halco equipment was successfully completed at Hill House quarry, Troon, Scotland.
Read more about this topic: Down-the-hole Drill
Famous quotes containing the word history:
“Social history might be defined negatively as the history of a people with the politics left out.”
—G.M. (George Macaulay)
“The principle that human nature, in its psychological aspects, is nothing more than a product of history and given social relations removes all barriers to coercion and manipulation by the powerful.”
—Noam Chomsky (b. 1928)
“There is nothing truer than myth: history, in its attempt to realize myth, distorts it, stops halfway; when history claims to have succeeded this is nothing but humbug and mystification. Everything we dream is realizable. Reality does not have to be: it is simply what it is.”
—Eugène Ionesco (b. 1912)