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Showing 241 - 260 of 82805 results
  • Study of Breached Gas Mitigation in an Underground Coal Mine Using Network Modeling and Physical Model
    Study of Breached Gas Mitigation in an Underground Coal Mine Using Network Modeling and Physical Model
    Addis J ;
    Kimutis R
    2025/02/22 | Mining Publications
    Due to the surge in shale gas production, a substantial number of unconventional shale gas wells have been drilled across U.S. coal reserves. Gas breaches resulting from damaged wells pose a considerable safety risk to miners. This paper investigates how a ventilation system can effectively manage breached gas through a network-based numerical mode ...
    Public Domain
  • PreImplementation Evaluation of VR as a Mine Safety Training Tool
    Pre-Implementation Evaluation of VR as a Mine Safety Training Tool
    Bellanca, Jennica L. ;
    Hoebbel, Cassandra L.
    2025/02/22 | Mining Publications
    High-fidelity, immersive training is known for its learning and logistical benefits. While other industries have used virtual reality (VR) for decades, the same uptake has not been seen in mining. NIOSH recently developed an adaptable, scalable VR training platform, VR Mine Rescue Training (VR-MRT), which has attracted significant industry interest ...
    Public Domain
  • Diesel Powertrains for Underground Mining Mobile Equipment
    Diesel Powertrains for Underground Mining Mobile Equipment
    Bugarski, Aleksandar D. ;
    Ritter DA Jr.
    2025/02/22 | Mining Publications
    The results of laboratory characterization of tailpipe emissions for three "clean" engines that meet U.S. EPA Tier 4 final emissions standards were used to assess the viability and effectiveness of repowering existing engines and powering new mobile equipment with those engines as a control strategy for reducing exposure of underground miners to di ...
    Public Domain
  • Evaluating Roof Stability in an Underground Stone Mine Under High Horizontal Stress Insight from Numerical Modeling and Field Observation with Mitigation Strategy
    Evaluating Roof Stability in an Underground Stone Mine Under High Horizontal Stress: Insight from Numerical Modeling and Field Observation with Mitigation Strategy
    Evanek N ;
    Miller T
    2025/02/22 | Mining Publications
    High horizontal stress has been identified as a critical factor affecting roof stability in underground mines, particularly when the immediate roof consists of weak or laminated rock. Numerical models were employed to better understand the influence of caprock thickness, cutting sequences, and the orientation of driving direction relative to maximu ...
    Public Domain
  • Exploring the Performance and Reliability of Communication Links Subjected to Electromagnetic Interference in Radio FrequencyControlled Heavy Equipment in an Underground Coal Mine
    Exploring the Performance and Reliability of Communication Links Subjected to Electromagnetic Interference in Radio Frequency-Controlled Heavy Equipment in an Underground Coal Mine
    Girman M ;
    Zhang Y
    2025/02/22 | Mining Publications
    Wireless technologies are increasingly being implemented in underground mines for various purposes such as communications, tracking, remote control, remote sensing, and environmental monitoring. However, the adoption comes with risks as common wireless systems, such as WiFi, Bluetooth, IWT (Innovative Wireless Technologies) wireless system, often o ...
    Public Domain
  • Investigating Rib Brow Potential Through Monitoring in a RoomandPillar Coal Mine
    Investigating Rib Brow Potential Through Monitoring in a Room-and-Pillar Coal Mine
    Guner D ;
    Kirmaci A
    2025/02/22 | Mining Publications
    Rib brows present a significant safety hazard in underground coal mines in the United States. To address this issue, researchers at the National Institute for Occupational Safety and Health (NIOSH) and Missouri University of Science and Technology (MST) are developing a practical tool to assess both the potential of rib brow formation and the stabi ...
    Public Domain
  • A Comparison of Ground Permeability Changes Before During and After Longwall Panel MineBys Under Deep and Shallow Cover
    A Comparison of Ground Permeability Changes Before, During, and After Longwall Panel Mine-Bys Under Deep and Shallow Cover
    Addis J ;
    Harris, Marcia L.
    2025/02/22 | Mining Publications
    Shale gas wells can sometimes drill through coal reserves. Hypothetically, the caving of the gob from longwall coal mines may deform the shale gas well casing and potentially result in a breach. NIOSH researchers studied the permeability of the surrounding ground strata that may affect the potential for an inflow of gas into an underground mine env ...
    Public Domain
  • Evaluation of Alternative Chain Pillar Designs in a Deep Longwall Mine
    Evaluation of Alternative Chain Pillar Designs in a Deep Longwall Mine
    Evanek N ;
    Hicks S
    2025/02/22 | Mining Publications
    Design of chain pillars in a longwall mine setting is one of the main engineering controls on the global and local stability of the mine. Challenges with roof instabilities, floor heaves, and pillar failures can be alleviated, to some extent, by careful design of gateroad configurations and chain pillars. This work investigates three different alte ...
    Public Domain
  • Enhancing Pillar Stability in a DeepCover Longwall Mine Using the LaModel Program A Comparative Analysis
    Enhancing Pillar Stability in a Deep-Cover Longwall Mine Using the LaModel Program: A Comparative Analysis
    Sears MM
    2025/02/22 | Mining Publications
    The stability of gateroad pillars is crucial in deep-cover longwall mining, especially during transitions to wider panel layouts. This study evaluates the transition from a 700-foot to a 1,000-foot panel layout with an inter-panel barrier in a deep-cover longwall mine in Southwestern Virginia to identify a configuration that enhances stability and ...
    Public Domain
  • Optimization of Fire Suppression Nozzle Location on Simulated Mobile Mine Equipment
    Optimization of Fire Suppression Nozzle Location on Simulated Mobile Mine Equipment
    Bahrami D ;
    Tang W
    2025/02/22 | Mining Publications
    The location and orientation of fire suppression nozzles is critical in suppressing mobile mine equipment fires. To effectively suppress such fires, optimization needs to be considered for the suppression nozzle locations and discharge angle. Detailed experiments were conducted to study the effectiveness of fire suppression agents with different no ...
    Public Domain
  • A Preliminary Quantitative Risk Assessment for Inhalation Exposure to Glutaraldehyde
    A Preliminary Quantitative Risk Assessment for Inhalation Exposure to Glutaraldehyde
    Dankovic, David A. ;
    Pandalai, Sudah P.
    2025/02/20 | National Institute for Occupational Safety and Health (NIOSH)
    Glutaraldehyde (Chemical Abstracts Service [CAS] registry number 111-30-8) has various occupational uses and is associated with adverse health effects including respiratory tract irritation, asthma, and chronic obstructive pulmonary disease. A quantitative risk assessment was conducted to evaluate the likelihood of adverse health effects associated ...
    Public Domain
  • Examinee NonDisclosure of Relevant Medical Information During Transportation Related Regulatory Examinations A CaseSeries
    Examinee Non-Disclosure of Relevant Medical Information During Transportation Related Regulatory Examinations: A Case-Series
    Caruth J ;
    Graber JM
    2025/02/20 | National Institute for Occupational Safety and Health (NIOSH)
    Objective: In the past decade, U.S. transport accidents have resulted in over 370,000 fatalities. Research on medical history non-disclosure during mandatory regulatory exams has been limited. This study used the National Transportation Safety Board's (NTSB) Case Analysis and Reporting Online (CAROL) database to: (1) Identify non-disclosure, (2) As ...
  • Assessment of a Gas Monitor Distribution Program in Rural Wisconsin
    Assessment of a Gas Monitor Distribution Program in Rural Wisconsin
    Bendixsen CG ;
    Hanschu JA
    2025/02/20 | National Institute for Occupational Safety and Health (NIOSH)
    Objectives: Manure gases are deadly agricultural hazards that recently caused the deaths of two manure haulers and rural firefighters in New York in June 2024. This study had two objectives: 1) survey fire departments to learn about their use and promotion of four gas monitors in rural communities; 2) assess the Four Gas Monitor Program, a gas moni ...
  • Developing an Intergroup Dialogue Curriculum to Improve Mental Health System Capacity for Farmers and Agricultural Communities
    Developing an Intergroup Dialogue Curriculum to Improve Mental Health System Capacity for Farmers and Agricultural Communities
    Beseler C ;
    Keeney AJ
    2025/02/20 | National Institute for Occupational Safety and Health (NIOSH)
    The purpose of this study is to present the development of an intergroup dialogue curriculum for faith leaders and behavioral health providers to expand rural behavioral health care systems. The Clergy Outreach and Professional Engagement model and intergroup dialogue technique formed the basis of the curriculum. A discussion of the adaptation of a ...
  • Glove Performance Dermal Absorption of Fentanyl (Dataset)
    Fisher EM ;
    Greenawald LA
    2025/02/20 | National Institute for Occupational Safety and Health (NIOSH)
    With the increase in opioid sales on the illicit drug market and overdoses, opioid incidents and exposure risk are concerns for first responders, including law enforcement officers. To prevent dermal, mucosal, or inhalation exposure to opioids and other hazardous drugs, first responders rely on personal protective equipment (PPE) - including respir ...
    Dataset Public Domain
  • Measures and Measurement Tools for Studying Total Worker Health
    Measures and Measurement Tools for Studying Total Worker Health®
    Booth A ;
    Bray J
    2025/02/20 | National Institute for Occupational Safety and Health (NIOSH)
    Objective: Identify survey, interview, and observational measures and measurement tools to assess constructs associated with Total Worker Health® (TWH). Methods: We conducted a scoping review to identify articles that presented or evaluated measures and tools associated with worker health, safety, and well-being. We supplemented this review with a ...
  • Effects of Natural and Synthetic Fibers in Turfgrass Horse Racing Surfaces as Characterized by Triaxial Shear Tests
    Effects of Natural and Synthetic Fibers in Turfgrass Horse Racing Surfaces as Characterized by Triaxial Shear Tests
    Erbland P ;
    Peterson ML
    2025/02/19 | National Institute for Occupational Safety and Health (NIOSH)
    Soils used in putting green applications are designed to move water quickly through the profile yet are still able to support turfgrass growth. North American turfgrass horse racing surfaces often use similar soils which are reinforced with synthetic fibers to achieve both high infiltration rates and high shear strength. Natural fibers, in particul ...
  • Assessing the Impact of Advanced Cooling Technology in Firefighting Gear During Live Burn Scenario
    Assessing the Impact of Advanced Cooling Technology in Firefighting Gear During Live Burn Scenario
    Altman L ;
    Bellacov R
    2025/02/19 | National Institute for Occupational Safety and Health (NIOSH)
    Objective: A firefighter wears a standard safety coat, its model unchanged for many years, when tackling a fire. We designed a new cooling system coat with carbon nano tube-based fabric and pouches inside the coat for coolants and fans. The coats, one standard and the other still evolving, are compared on several metrics including core body tempera ...
    Public Domain
  • Phase Level Assessment of Ergonomic Intervention Effectiveness in Reducing Knee Musculoskeletal Disorder Risks During Residential Roof Shingle Installation (Dataset)
    Breloff SP ;
    Carey RE
    2025/02/18 | National Institute for Occupational Safety and Health (NIOSH)
    The prevalence of knee musculoskeletal disorders (MSDs) among roofers due to ergonomically unfavorable kneeling postures during shingle installation is a well-recognized concern. While knee-saving interventions like knee savers (KSs) and knee pads (KPs) have shown potential to reduce MSD risks, their effectiveness across different phases of shingle ...
    Dataset Public Domain
  • Evaluation of a Passive Back-Support Exoskeleton in Bed-to-Chair Patient Handling Tasks (Dataset)
    Alluri CSV ;
    Hawke AL
    2025/02/18 | National Institute for Occupational Safety and Health (NIOSH)
    The objective of this study was to evaluate the effect of a passive back-support exoskeleton on the physical demands of caregivers during bed-to-chair patient handling tasks. Eight participants (5 males and 3 females) performed 4 different patient handling tasks, including 1) lying to sitting, 2) sitting to standing, 3) standing to sitting, and 4) ...
    Dataset Public Domain
241 - 260 / 82805