Download or read book Noise Abatement of Pneumatic Rock Drill written by Charles R. Summers and published by . This book was released on 1974 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Noise Reduction of a Pneumatic Rock Drill written by Aarne Visnapuu and published by . This book was released on 1975 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Noise Abatement of Pneumatic Rock Drill written by Charles R. Summers and published by . This book was released on 1974 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Noise from Pneumatic Rock Drills written by John William Chester and published by . This book was released on 1964 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies were made to determine the effect of the shape of a pneumatic-rock-drill exhaust muffler on its efficiency, and the origin and reduction of exit noise from the mufflers. The report describes the investigation of rock-drill noise abatement.
Download or read book Noise from Pneumatic Rock Drills written by Herbert P. LeVan and published by . This book was released on 1964 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies were made to determine the effect of the shape of a pneumatic-rock-drill exhaust muffler on its efficiency, and the origin and reduction of exit noise from the mufflers. The report describes the investigation of rock-drill noise abatement.
Download or read book Noise Reduction of a Pneumatic Rock Drill written by Aarne Visnapuu and published by . This book was released on 1975 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Noise from Pneumatic Rock Drills written by William C. Miller and published by . This book was released on 1963 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Practical Approach to the Exhaust Silencing of a Pneumatic Rock Drill written by Morton Gary Barth and published by . This book was released on 1972 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: "One-third octave spectrum analyses of the exhaust noise produced by a medium sized pneumatic rock drill were obtained during free recriprocation to determine the most troublesome bands of noise. Noise reduction techniques were then used to design exhaust mufflers which would reduce the level of the exhaust noise to an acceptable level with a minimum increase in back pressure. The prototype mufflers evaluated included an expansion chamber, a resonator, and various modified expansion chambers. One of the modified expansion chambers tested provided very good attenuation reducing the exhaust noise from 113 dBA to 87 dBA at the operator's ear position. It caused only a slight increase in the back pressure and no detrimental effect on drill performance. The resonator muffler did not provide acceptable attenuation of the exhaust noise. Muffler development progressed under the assumption that icing would not be a problem. However, the icing characteristics of the final prototype muffler were studied and a possible method to prevent icing is suggested"--Abstract, leaf ii.
Download or read book Report of Investigations written by and published by . This book was released on 1989 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Information Circular written by and published by . This book was released on 1975 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Noise Test Report written by Robert R. Stein and published by . This book was released on 1989 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book List of Bureau of Mines Publications and Articles with Subject and Author Index written by United States. Bureau of Mines and published by . This book was released on 1975 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mining Machinery Noise Control Guidelines 1983 written by R. C. Bartholomae and published by . This book was released on 1983 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fourth Symposium on our Environment written by Hian Kee Lee and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the Fourth Symposium on Our Environment, held in Singapore, May 21-23, 1990
Download or read book Proceedings of the MESA Noise Control Conference St Louis Mo November 11 12 1975 written by and published by . This book was released on 1976 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Statistical Analysis of Methane Concentration Fluctuations written by A. W. Deurbrouck and published by . This book was released on 1974 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estimated Cost of Exploiting Enriched Hard Manganese Ore from the Maggie Canyon Deposit Artillery Mountains Region Mohave County Ariz written by Douglas A. Elkins and published by . This book was released on 1964 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: