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:
“I think that Richard Nixon will go down in history as a true folk hero, who struck a vital blow to the whole diseased concept of the revered image and gave the American virtue of irreverence and skepticism back to the people.”
—William Burroughs (b. 1914)
“The history of progress is written in the blood of men and women who have dared to espouse an unpopular cause, as, for instance, the black man’s right to his body, or woman’s right to her soul.”
—Emma Goldman (1869–1940)
“The only thing worse than a liar is a liar that’s also a hypocrite!
There are only two great currents in the history of mankind: the baseness which makes conservatives and the envy which makes revolutionaries.”
—Edmond De Goncourt (1822–1896)