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Related Experiment Video

Updated: Feb 3, 2026

Experimental Methods of Dust Charging and Mobilization on Surfaces with Exposure to Ultraviolet Radiation or Plasmas

Experimental Methods of Dust Charging and Mobilization on Surfaces with Exposure to Ultraviolet Radiation or Plasmas

Published on: April 3, 2018

Dust Suppression Hopper: reduces dust liberation during bulk loading: Two case studies.

J F Colinet¹, A B Cecala¹, J R Patts¹

¹National Institute for Occupational Safety and Health, Pittsburgh, PA, USA.

Mining Engineering

|November 6, 2018

Summary

The Dust Suppression Hopper (DSH) significantly reduces airborne respirable dust during industrial sand loading. This technology can decrease dust exposure for workers by up to 88%.

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Area of Science:

Occupational Health and Safety
Industrial Hygiene
Environmental Engineering

Background:

Industrial sand processing involves loading finished products into various containers.
Dust liberation during loading can expose workers to respirable crystalline silica.
Control technologies are crucial for mitigating dust exposure in industrial settings.

Purpose of the Study:

To evaluate the effectiveness of the Dust Suppression Hopper (DSH) in reducing dust during bulk loading of industrial sand.
To assess the DSH technology's performance in real-world industrial sand processing plants.

Main Methods:

The U.S. National Institute for Occupational Safety and Health (NIOSH) conducted case studies at two industrial sand processing facilities.
The Dust Suppression Hopper (DSH) technology was implemented and monitored during bulk loading operations into trucks and trains.

Main Results:

The DSH technology demonstrated a significant reduction in airborne respirable dust levels.
Dust reduction percentages ranged from 39% to 88%, varying with the size of the product being loaded.

Conclusions:

The Dust Suppression Hopper (DSH) is an effective control technology for reducing dust exposure during industrial sand loading.
Implementing the DSH can lead to substantial improvements in worker safety and environmental conditions at sand processing plants.