Littlejohn & Co. to Sell HydroChemPSC to Clean Harbors for $1.25 Billion in CashBusiness Wire • 08/04/21
Clean Harbors Signs Definitive Agreement to Acquire Used Motor Oil Collection and Re-Refining Assets from Vertex EnergyBusiness Wire • 06/29/21
Clean Harbors to Participate in Ninth Annual Stifel/Waste 360 Investor SummitBusiness Wire • 06/15/21
Clean Harbors, Inc. (CLH) CEO Alan McKim on Q1 2021 Results - Earnings Call TranscriptSeeking Alpha • 05/09/21
Strength Seen in Clean Harbors (CLH): Can Its 6% Jump Turn into More Strength?Zacks Investment Research • 05/06/21
Clean Harbors, Inc. (CLH) CEO Alan McKim on Q4 2020 Results - Earnings Call TranscriptSeeking Alpha • 02/24/21