DOE - Cannabis Science Task Force Steering Committee (October 28, 2020) - Heavy Metals Work Group - Presentation Washington State Department of Ecology (DOE) Source https://www.ezview.wa.gov/...uments/CannabisSTF/October%20HMW%20Presentation.pdf Published: Friday October 30, 2020 10:42 AM Replications Cannabis Observer Information Set Membership DOE - Cannabis Science Task Force Steering Committee (October 28, 2020) - Information Set