2 edition of Sources and characteristics of quartz dust in coal mines found in the catalog.
Sources and characteristics of quartz dust in coal mines
John A. Organiscak
Includes bibliographical references (p. 16).
|Statement||by J.A. Organiscak, S.J. Page, and R.A. Jankowski.|
|Series||Information circular ;, 9271, Information circular (United States. Bureau of Mines) ;, 9271.|
|Contributions||Page, Steven J., Jankowski, Robert A.|
|LC Classifications||TN295 .U4 no. 9271, TN312 .U4 no. 9271|
|The Physical Object|
|Pagination||ii, 21 p. :|
|Number of Pages||21|
|LC Control Number||90002409|
Quartz dust sources during overburden drilling at surface coal mines. [S D Maksimovic; Steven J Page] -- The Bureau of Mines identified and evaluated major sources of quartz dust during overburden drilling at a surface coal mine, The relative contribution of each source to the total dust hazard was. Four generations of his family have worked in the mines, including Lockard himself, and his book interweaves family letters and diaries with firsthand interviews and literature on the industry to evoke a century's worth of mining and coal town life.
For most of the effects coal mine dust was chosen as a reference, since it contains up to 10% of crystalline silica (alpha-quartz) and is well studied both in vivo and in vitro. RESPIRABLE COAL MINE DUST: CONSTITUENTS AND SOURCES. RCMD comprises the size fraction of airborne particles in underground mines that can be inhaled by miners and deposited in the distal airways and lung gas-exchange region ().The dust rule states, “Any respirable dust in the mine atmosphere is considered respirable coal mine dust to which miners are exposed and, when .
Quartz measurement in coal dust. After collection of coal dust in the calm air chamber, the pre-weighed filters with coal dust were weighed again. Then the filters were placed in a 50 ml beaker and low-temperature ashed in a Plasma Prep II (Model ; SPI Inc., West Chester, PA, Cited by: 3. Coal typically contains variable but substantial amounts of mineral matter, of which quartz is an important component. The major exposures to coal dust occur during mining and processing of coal. In these operations the exposure includes dusts generated not only from the coal but also from adjacent rock strata and other sources.
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NIOSHTIC-2 Publications Search - - Sources and characteristics of quartz dust in coal mines. Quartz dust is one of the most significant ongoing health concerns in coal mining today.
Additional Physical Format: Online version: Organiscak, John A. Sources and characteristics of quartz dust in coal mines. Washington, D.C.: U.S. Dept. of the. Overexposure to respirable quartz dust can lead to the develop ment of silicosis, a debilitating and potentially fatal lung disease.
The current federal permissible coal mining exposure limit for respirable dust in coal mines is 2 mg/m 3 (Ti Code of Federal Regulations, ). If the respirable dust sample contains more than 5% quartz. This study examined the potential for coal mine roof bolter dust to be a source of a worker's exposure to respirable quartz.
For the models of roof bolter studied, the dust from bolt hole drilling is collected by a dry vacuum exhaust system. All six mine sites were mining coal with relatively low mineral matter content, although two mines were operating in the Fire Clay coal bed which contains a persistent tonstein.
Interpretations of Ca, Mg, Mn, Na, and K concentrations strongly suggest that the top strata above the mined seam is the primary source of mineral dust produced during Cited by: Limited wettability studies of coal dust and quantification of respirable quartz at two mines (one in Illinois and one in Indiana) have indicated difficult to wet coal dusts in several areas and that immediate roof and floor strata have quartz content ranging from 25% to 35 % while the coal seam had quartz content varying from 2 % to 8%.
In coal mines, the primary source of mineral dust is the top strata above the coal seam (Schatzel, ); in non-coal mines, silica is a component of the dust present throughout numerous mining. Exposures in coal mining environments can result in lung diseases such as Coal workers' pneumoconiosis (CWP, sometimes referred to as “black lung”) and silicosis, which are linked specifically to dust with significant fractions of crystalline silica (i.e., quartz) (Castranova and Vallyathan, ).Cited by: This paper presents physical, mineralogical and wetting characteristics for dust samples from the Interior Basin coal mines.
The samples were from three sources: 1) Produced in the laboratory from bulk samples of coal and immediate roof and floor strata, 2) In-mine samples collected through gravimetric sampling of active mining areas, and 3) In-mine samples collected from wet-scrubbers on Cited by: many industries.
In coal mining, overexposure to respirable coal mine dust can lead to coal workers’ pneumoconiosis (CWP). CWP is a lung disease that can be disabling and fatal in its most severe form. In addition, miners can be exposed to high levels of respirable silica dust, which can cause silicosis, another disabling and/or fatal lung.
The Science of the Total Environment, 23 () 47 Elsevier Scientific Publishing Company, Amsterdam -- Printed in The Netherlands A STUDY OF PHYSICOCHEMICAL CHARACTERISTICS OF RESPIRABLE DUST IN AN INDIAN COAL MINE N,S, RAWAT Indian School of Mines, Dhanbad, INDIA ABSTRACT The respirable coal dust samples were collected from the mine atmos- phere during drilling of coal Cited by: 5.
Respirable crystalline silica (RCS), which generally occurs as quartz in coal mines, has long been recognized as an occupational health hazard. For decades, the mass content of quartz in respirable dust has been measured in U.S.
mines as a means of monitoring RCS exposures. Quartz dust is one of the most significant on going health concerns in coal mining today.
Since the early 's the U.S. Bureau of Mines has conducted numerous studies in underground and surface coal mines to identify the sources of quartz dust and its fundamental characteristics. The report presents data and conclusions obtained from these studies.
The aerodynamics, sources and control of airborne dust. Authors; Authors and affiliations Air curtains for reducing exposure of heading machine operators to dust in coal mines, Ann.
Occup. Hyg. 28, 93 On the relationship between quartz in the coal seam and quartz in the respirable airborne coal dust. Proc. 4th Int. Mine Ventilation Cited by: 1. For example, % quartz in 1 mg m −3 respirable rock dust added to 1 mg m −3 respirable coal dust containing 4% quartz would lead to an overall quartz concentration of μg m −3.
The other dust (marble), untreated and treated, had very low quartz content and the respirable fraction was not significantly enriched compared to the by: 1. Protecting against airborne dust exposure in coal mines NSW Work Health and Safety legislation defines airborne dust to include both respirable dust and inhalable dust.
In the NSW coal mining industry, dust control measures such as the enforced regulation of dust monitoring and health surveillance continue to help protect NSW coal mine workers File Size: KB.
In this section, data on exposures to crystalline silica (quartz) (see also the monograph on silica in this volume) as a component of the dust in coal mines are presented. For other exposure data, see Section Coal mine dust is a complex and heterogeneous mixture containing more than 50.
An analysis of dust sampling data for coal mines operating in the Illinois No. 6 seam for the periods and showed that continuous miner operators‟ exposure to quartz dust was 39% higher despite a 9% decrease in respirable coal dust exposure.
This study identifies coal and quartz dust characteristics for Illinois No. 6 coal. development of improved engineering controls to minimize mine worker dust exposure.
A mine in western Kentucky cooperated to evaluate the effectiveness of the SIUC innovative spray system in controlling respirable coal and quartz dust generated by a continuous miner. This study designed a continuous miner spray system specific to the. The Mine Safety and Health Adminstration (MSHA) regulates exposure to respirable quartz in coal mines indirectly through reductions in the respirable coal mine dust exposure limit based on the content of quartz in the airborne respirable dust.
This reduction is implemented when the quartz content of airborne respirable dust exceeds 5 percent by weight. 4. Develop physical, mineralogical, and elemental characteristics of coal and quartz dust from in-mine dust samples.
5. Develop surface and wettability characteristics of respirable coal and quartz dust from wettability studies on respirable dust from in-mine sampling. 6. Identify near-term strategies for coal and quartz dust control.quartz dust.
One approach for controlling respirable quartz dust is to utilize control techniques that have been successful on coal dust and determine their success for quartz dust.
Modifications to these control techniques should also be considered. One such control technique for use on con tinuous miners is the flooded-bed Size: 8MB.Coal mine dust can cause cytotoxicity and induce the release of mediators from inflammatory cells; however, these effects are not predictable from its quartz content alone.
In vitro, the cytotoxicity of quartz is clearly inhibited by the presence of coal dust, while the inflammatory activity is dependent on yet unidentified parameters.