2023 January, Volume 37, Number 1December 30, 2022/in Newsletter /by Amy KnudsonBill Kombol, Palmer Coking Coal Company, LLP, Coal Mine Hazards Newsletter Link https://nwgs.org/wp-content/uploads/2022/12/2023_1-Pic.jpg 1014 659 Amy Knudson Amy Knudson2022-12-30 07:30:542022-12-30 07:30:542023 January, Volume 37, Number 1