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The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

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Noise Control of Large Track Dozers Used in Surface Mining.

PB84172477

Publication Date	1983
Personal Author	Madden, R.; Rubin, M.
Page Count	59
Abstract	This report summarizes the development and demonstration of retrofit noise control treatments for large track dozers. The noise control treatments were installed on three demonstration dozers (two Caterpillar D9G's and one International TD25D), and field tested for more than 1 year in surface mines. One of the D9G's was equipped with a basic operator cab, while the other two machines had no cab, but were equipped with rollover protective structures. The noise control treatments proved to be both effective and durable. As part of this project, a field manual describing the fabrication and installation of the treatments was also produced. The manual was distributed to mining industry representatives through a series of 1-day workshops that were presented across the United States. A total of 49 workshops was presented to over 800 people. As a result of the favorable reception of the workshops, an audio-visual slide presentation was also developed that summarizes the program.
Keywords	Noise reduction Surface mining Bulldozers Excavating equipment Field tests Performance evaluation Mines(Excavations)
Source Agency	Bureau of Mines
NTIS Subject Category	68B - Noise Pollution & Control 48A - Mineral Industries 50C - Construction Equipment, Materials, & Supplies
Corporate Authors	Bolt Beranek and Newman, Inc., Cambridge, MA.; Bureau of Mines, Washington, DC.
Document Type	Technical Report
Title Note	Open file rept. 1 Oct 77-31 Dec 82.
NTIS Issue Number	198413
Contract Number	J0177049

Noise Control of Large Track Dozers Used in Surface Mining.

Noise Control of Large Track Dozers Used in Surface Mining.
PB84172477

Publication Date	1983
Personal Author	Madden, R.; Rubin, M.
Page Count	59
Abstract	This report summarizes the development and demonstration of retrofit noise control treatments for large track dozers. The noise control treatments were installed on three demonstration dozers (two Caterpillar D9G's and one International TD25D), and field tested for more than 1 year in surface mines. One of the D9G's was equipped with a basic operator cab, while the other two machines had no cab, but were equipped with rollover protective structures. The noise control treatments proved to be both effective and durable. As part of this project, a field manual describing the fabrication and installation of the treatments was also produced. The manual was distributed to mining industry representatives through a series of 1-day workshops that were presented across the United States. A total of 49 workshops was presented to over 800 people. As a result of the favorable reception of the workshops, an audio-visual slide presentation was also developed that summarizes the program.
Keywords	Noise reduction Surface mining Bulldozers Excavating equipment Field tests Performance evaluation Mines(Excavations)
Source Agency	Bureau of Mines
NTIS Subject Category	68B - Noise Pollution & Control 48A - Mineral Industries 50C - Construction Equipment, Materials, & Supplies
Corporate Authors	Bolt Beranek and Newman, Inc., Cambridge, MA.; Bureau of Mines, Washington, DC.
Document Type	Technical Report
Title Note	Open file rept. 1 Oct 77-31 Dec 82.
NTIS Issue Number	198413
Contract Number	J0177049