ARCH - Arch Coal Inc. (ARCH) Q4 2020 Earnings Call Transcript February, 09 2021 07:31 PM Arch Coal Inc. Class A Image source: The Motley Fool. Arch Coal, Inc. (NYSE: ARCH) Q4 2020 Earnings Call Feb 9, 2021 , 10:00 a.m. ET Operator Continue reading For further details see: Arch Coal, Inc. (ARCH) Q4 2020 Earnings Call Transcript