Carlin Team Surpasses Target for Improving Underground Air Quality

In 2016, all Newmont operations around the world began the Health Risk Management program – using 2015 baseline exposure reduction index (ERI) data – in an effort to reduce health-related exposures by 10 percent. Through the combined efforts of employees from the Leeville and Portal mines, Carlin Underground surpassed that target by implementing a variety of engineering and administrative controls to reduce exposures and improve air quality.

In fact, Carlin saw a 23.5 percent reduction in health related exposures as result of improved controls.

Leeville’s ventilation system changes, along with increased management of air door positioning and a focus on vehicle exhaust systems, led to a significant reduction in diesel particulate matter (DPM) levels. Instead of using tractors, supervisors and mechanics at Carlin’s Portal Mines now use Jeeps and pickups when underground. The enclosed cabs on these vehicles provide a cleaner and quieter environment than the diesel tractors.

At Pete Bajo, a joint effort between the operators and maintenance teams allowed miners to operate loading trucks at low idle and utilize mine air rather than the onboard compressor, leading to lower DPM emissions.

Carlin Underground’s efforts have helped us advance our Journey to Zero Harm by lowering the risk of future occupational illnesses.

Using baseline data from the end of 2016, each region is currently working to establish their 2017 exposure reduction index and develop the applicable control measures for the identified health risk agents, similar exposure groups and the corresponding exposure reduction targets.

To learn more about our approach to identifying and managing health risks, visit our 2016 Beyond the Mine sustainability report.