206. Reducing Enclosed Cab Drill Operator's Respirable Dust Exposure With Effective Filtration and Pressurization Techniques

Cecala, Andrew B.; Organiscak, John A.; Zimmer, J. A.; Heitbrink, William A.; Moyer, Ernest S.; Schmitz, Michael L.; Ahrenholtz, E.; Coppock, C.; Andrews, E.

doi:10.3320/1.2757882

Cited by 5 publications

(5 citation statements)

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“…1) was developed under a cooperative relationship between a mine corporation and NIOSH [6, 7]. The Helmet-CAM system includes a lightweight video camera on a workers’ hardhat and an instantaneous respirable dust monitor on a worker’s belt/backpack.…”

Section: Introductionmentioning

confidence: 99%

Formative research to reduce mine worker respirable silica dust exposure: a feasibility study to integrate technology into behavioral interventions

Haas

Willmer

Cecala

2016

Pilot Feasibility Stud

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BackgroundThe use of formative research as a critical component of intervention planning is highly supported in the literature. However, studies that report such processes in practice are minimal. This paper reports on the formative data collection and analysis that informed the development of a multilevel intervention that utilizes mine assessment technology to bridge health communication between workers and management to reduce mine worker overexposure to respirable silica dust.MethodsFormative research to assess the feasibility and utility of this intervention design included stakeholder meetings and feedback, mine visits and observations, interviews with mine workers, and a focus group with mine management. Data collection took place at several US industrial mineral mine sites and a southeastern regional safety meeting. Interviews inquired about workers’ perceived susceptibility and severity to respirable silica exposure, barriers to preventing overexposure, behaviors that reduce exposure, and perceptions about respirable dust-monitoring technology. A focus group discussed mine stakeholders’ uses of various dust assessment technology.ResultsThe data was qualitatively analyzed and coded using a thematic and theoretical analysis. Researchers found recurring themes for both target audiences that informed the need and subsequent development of a mixed-method multilevel intervention to improve communication quantity and quality around dust-control practices.ConclusionsResults indicate that formative research is critical to: identify and develop an intervention that meets target audience needs; accurately represent the health problem; and develop positive relationships with research partners and stakeholders.

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Section: Introductionmentioning

confidence: 99%

Formative research to reduce mine worker respirable silica dust exposure: a feasibility study to integrate technology into behavioral interventions

Haas

Willmer

Cecala

2016

Pilot Feasibility Stud

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“…Several studies have investigated methods to reduce dust production during the drilling process using the DTH air hammer drilling method. Cecala et al (2003) developed an enclosed cab with retrofitted filtration and pressurization systems to protect the drill operators from the drilling dust. However, while this system offers shelter to the workers inside the cab, personnel in the vicinity of the drilling operations and machinery remain exposed to dusty environments.…”

Section: Introductionmentioning

confidence: 99%

Parametrical design and optimization of a reverse circulation drill bit for dust control

Fan,

Li,

Luo

2024

Front. Built Environ.

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The reverse circulation down-the-hole air hammer drilling (RC-DTH) method is renowned for its efficiency in hard rock formations and exceptional dust control performance. It presents opportunities for cost-saving, efficiency improvement, energy conservation, and environmental protection. Reverse circulation drill bits are critical components of this method. This study focused on the air reverse circulation regime, investigating various geometric parameters of the RC drill bits through computational and experimental methods to enhance its dust control performance. Results indicate that increasing the layers of suction nozzles, enlarging the diameters of the suction and mixing nozzles, and optimizing the input airflow rate can effectively channel airflow toward the central passage of the drill tool. Consequently, this optimization significantly improves the dust control performance of the RC drill bits. Conversely, increases in the flushing nozzle diameter and alterations in the suction nozzle location have detrimental effects on the dust control capability of the RC drill bits. Field tests were conducted at the Yuan Jiacun iron mine, affiliated with Taiyuan Iron and Steel (Group) CO., LTD. The field tests demonstrate that the optimized RC drill bit exhibits excellent dust performance.

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“…In this regard, prevention and control of dustiness and endogenous fire are among the most important issues associated with the overall problem of lowering the accident rate in the coal industry. Thus, many Russian and foreign researchers addressed the issue of dust control in coal mines [1][2][3][4][5][6][7][8][9], highlighting it as one of the factors affecting industrial safety. Some researchers offered various methods of dust control and dust removal [10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Causes Of Low Efficiency Of Combined Ventilation System In Coal Mines In Resolving The Problem Of Air Leaks (Inflows) Between Levels And Surface

et al. 2017

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The paper discusses the problem of the underground mining safety control. The long-term air intake to coal accumulations is reviewed as one of the reasons of endogenous fires during mining. The methods of combating air leaks (inflows) in order to prevent endogenous fires are analyzed. The calculations showing the discrepancy between the design calculations for the mine ventilation, disregarding a number of mining-andgeological and mining-engineering factors, and the actual conditions of mining are given. It is proved that the conversion of operating mines to combined (pressure and exhaust) ventilation system in order to reduce the endogenous fire hazard of underground mining is unreasonable due to impossibility of providing an optimal distribution of aerodynamic pressure in mines. The conversion does not exclude the entry of air into potentially hazardous zones of endogenous fires. The essence of the combined application of positive and negative control methods for the distribution of air pressure is revealed. It consists of air doors installation in easily ventilated airways and installation of pressure equalization chambers equipped with auxiliary fans near the stoppings, working sections and in parallel airways.The effectiveness of the combined application of negative and positive control methods for the air pressure distribution in order to reduce endogenous fire hazard of mining operations is proved.

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206. Reducing Enclosed Cab Drill Operator's Respirable Dust Exposure With Effective Filtration and Pressurization Techniques

Cited by 5 publications

References 0 publications

Formative research to reduce mine worker respirable silica dust exposure: a feasibility study to integrate technology into behavioral interventions

Formative research to reduce mine worker respirable silica dust exposure: a feasibility study to integrate technology into behavioral interventions

Parametrical design and optimization of a reverse circulation drill bit for dust control

Causes Of Low Efficiency Of Combined Ventilation System In Coal Mines In Resolving The Problem Of Air Leaks (Inflows) Between Levels And Surface

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