Versions of Montana Code 37-42-307. Retention of certificate by operators who terminate employment -- notification to department on LawServer 2023 Montana Code 37-42-307. Retention of certificate by operators who terminate employment — notification to department 2022 Montana Code 37-42-307. Retention of certificate by operators who terminate employment — notification to department 2021 Montana Code 37-42-307. Retention of certificate by operators who terminate employment — notification to department 2019 Montana Code 37-42-307. Retention of certificate by operators who terminate employment — notification to department 2018 Montana Code 37-42-307. Retention of certificate by operators who terminate employment — notification to department 2016 Montana Code 37-42-307. Retention of certificate by operators who terminate employment — notification to department 2014 Montana Code 37-42-307. Retention of certificate by operators who terminate employment — notification to department 2013 Montana Code 37-42-307. Retention of certificate by operators who terminate employment — notification to department 2009 Montana Code 37-42-307 – Retention of certificate by operators who terminate employment — notification to department