Foam Rock Dusting - Strata Worldwide
Foam Rock Dusting is not slurry dusting, but a patented procedure of combining standard rock dust, a small amount of water and a specialty foaming agent. A foam generator increases the volume of the liquid tenfold, creating lightweight foam to carry the dust. Dry rock dust continues to be supplied by the existing supplier.Development of a New Hydrophobic Rock Dust | Coal Age,Oct 09, 2014· The same is true for so-called “foam-based” rock dust. The use of foam-based rock dust has been explored for decades. The foam rock dust has shown to dry on the mine surface to a consistency similar to that of a sponge made of plaster. Once hardened, the foam rock dustInnovative Rock-Dusting System to Assist with Respirable,,Oct 23, 2015· “We place a good amount of rock dust on the roof and ribs compared to MSHA’s wet dust,” Pinkley said. “It appears we have better rock dust application.” “The allowance in 30 CFR is for an application of foam rock dust followed by a dry dust application,” said John McDonnell, technical director, DSI Underground Systems.Mine Safety and Health Administration (MSHA) | Protecting,,Mine operators are required by law to report all mining accidents immediately – within 15 minutes of when the operator knew or should have known about the accident.Safety and Health - CDC,pressurized hose and applies the rock dust to the mine surfaces. The rock dusters we evaluated traded duties each day. Rock dust, which is primarily calcium carbonate, is applied to the surfaces of the mine to reduce the fraction of combustible material in the mine (Figure 2). Figure 2. Spraying rock dust onto the surfaces inside the coal mine.CDC - Mining - 2020 Rock Dust Partnership Meeting,,Questions asked by attendees at the Rock Dust Partnership meeting on September 30, 2020, and answers furnished by NIOSH staff. Question: This is my first invitation to this partnership which is great, and it is very interesting especially as I was at Master Builders Technology (now owned by BASF) when we provisionally patented and tested "foamed coal dust."
Author's personal copy - arlweb.msha.gov
The size of the coal dust is relevant to the amount of rock dust required to inert the coal dust, with more rock dust needed to inert ner sizes of coal dust. Dust samples were collected by MSHA inspectors from several mines in each of MSHA s 10 bituminous Coal Mine Safety and Health Districts.(30 U.S.C. 451 (35 FR 17890),,MSHA published a proposed rule (72 FR 72301) on December 20, 2007,, Rock dust is an inorganic, non-combustible dust, such as crushed limestone, that the mine operator spreads on coal, a foam-producing type containing at least 21/2 gallons of foam-producing liquids and enough expellant to supply the foam.Petition - Docket No. M-2007-031-C | Mine Safety and,,The Petitioner alleges that the proposed alternate method will at all times guarantee no less than the same measure of protection afforded the miners by the standard. Petitioner proposed to provide only portable fire extinguishers where rock dust, water cars, and other water storage equipped with three 10-quart pails are not practical.MSHA - Program Policy Manual - Volume V; 75.1003-1,Rock dust shall be dry and usable to comply with this section. If containers other than bags are used, a means of transporting the rock dust, such as shovels, pails, etc., to any location on the section shall be provided. 75.1100-2 Quantity and Location of Firefighting Equipment,,
