ARCH - Arch Coal inc (ARCH) Q3 2021 Earnings Call Transcript October, 26 2021 06:31 PM Arch Coal Inc. Class A Image source: The Motley Fool. Arch Coal, inc (NYSE: ARCH) Q3 2021 Earnings Call Oct 26, 2021 , 10:00 a.m. ET Operator Continue reading For further details see: Arch Coal, inc (ARCH) Q3 2021 Earnings Call Transcript