https://archive.cdc.gov/www_cdc_gov/niosh/docs/mining/works/coversheet1340.html
CDC - Mining - Effectiveness of Selected Diesel Particulate Matter Control - NIOSH
Mar 15, 2017 - This study evaluated the effectiveness of the state-of-the-art technologies for controlling DPM and gaseous emissions from underground diesel-powered mining...
particulate matter controlcdcminingeffectivenessselected
https://sibr.nist.gov/record/control-non-volatile-particulate-matter-aircraft-engines-emission-standards-and-test
Control of Non-Volatile Particulate Matter From Aircraft Engines: Emission Standards and Test...