Results 101 to 110 of about 138 (127)

Hand-arm vibration syndrome among travertine workers: a follow up study. [PDF]

Occup Environ Med, 1994
Bovenzi M, Franzinelli A, Scattoni L, Vannuccini L.   +3 more
europepmc   +1 more source

Dose-response patterns for vibration-induced white finger. [PDF]

Occup Environ Med, 2003
Griffin MJ, Bovenzi M, Nelson CM.
europepmc   +1 more source

Historical relationship of mining, silicosis, and rock removal. [PDF]

Br J Ind Med, 1947
HOLMAN T.
europepmc   +1 more source

Mechanism of Rock Mass Detachment Using Undercutting Anchors: A Numerical Finite Element Method (FEM) Analysis. [PDF]

Materials (Basel)
Wójcik A, Jonak K, Karpiński R, Jonak J, Kalita M, Prostański D.   +5 more
europepmc   +1 more source

Environmental Changes Recorded in Sedimentary Rocks in the Clay-Sulfate Transition Region in Gale Crater, Mars: Results From the Sample Analysis at Mars-Evolved Gas Analysis Instrument Onboard the Mars Science Laboratory Curiosity Rover. [PDF]

J Geophys Res Planets
Clark JV, Sutter B, McAdam AC, Lewis JMT, Franz H, Archer PD, Chou L, Eigenbrode J, Knudson C, Stern J, Glavin D, Steele A, House CH, Schroeder J, Berger J, Rampe EB, Simpson S, Tutolo B, Milliken RE, Malespin C, Mahaffy P, Vasavada A.   +21 more
europepmc   +1 more source

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State and Prospects of the Percussive-Rotary Blasthole Drilling in Quarries

Journal of Mining Science, 2004
Methods of drilling in quarries are analyzed. The possibilities are estimated for the downhole pneumatic punchers designed in the Institute of Mining of the Siberian Branch of the Russian Academy of Sciences with a new working cycle and increased energy parameters.
Tanaino A S, A S Tanaino
exaly   +2 more sources

The Technique of Auger-Percussive-Rotary Drilling Research

2013 Fifth International Conference on Measuring Technology and Mechatronics Automation, 2013
A new drilling technique used in a wider range of application auger-percussive-rotary drilling technique is defined based on operation experiences and combined with the theoretical analysis in the anchor engineering of soil and rock. After summarizing the advances of this technique some existing problems encountered in practice are presented to improve.
null Wu Zhang, null Shi Zhi-Jun
exaly   +2 more sources

A SELF-EXCITED SYSTEM FOR PERCUSSIVE-ROTARY DRILLING

Journal of Sound and Vibration, 2003
Abstract A dynamic model for a new principle of percussive-rotary drilling is presented. This is a non-linear mechanical system with two degrees of freedom, in which friction-induced vibration is used for excitation of impacts, which influence the parameters of stick–slip motion.
A.D. BATAKO, V.I. BABITSKY, N.A. HALLIWELL   +2 more
openaire   +1 more source