A WEEKLY JOURNAL OF PRACTICAL INFORMATION ART SCIENCE MECHANICS. CHEMISTRY AND MANUFACTURES. Vol. XLIIINo. 26. THE RAND ROCK DRILL from the testimonials of some of our largest mining com no connecting rod or other device outside the steam chest and cylinder to get out of order the valve being thrown in the AMERICAN INDUSTRIESNo. 63. THE MANUFACTURE OF POWER DRILLS FOR MINING EXCAVATING ETC. ROCK DRILLS AND THEIR USES., scientific american, 1880-12-25
A WEEKLY JOURNAL OF PRACTICAL INFORMATION ART SCIENCE MECHANICS. CHEMISTRY AND MANUFACTURES. Vol. XLIIINo. 26. THE RAND ROCK DRILL from the testimonials of some of our largest mining com no connecting rod or other device outside the steam chest and cylinder to get out of order the valve being thrown in the AMERICAN INDUSTRIESNo. 63. THE MANUFACTURE OF POWER DRILLS FOR MINING EXCAVATING ETC. ROCK DRILLS AND THEIR USES., scientific american, 1880-12-25
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