# Relationship history for MSHA mine 4403929

Current hierarchy: **G Dale  Murray; Robert  Crowder → CM Mining, LLC → No 1 Loading Dock**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Donald  Nicewonder → No 1 Loading Dock; 1974-01-01 to 2005-11-01; source msha-controller-operator-history
- **operator_operates_mine:** Virginia Energy Company Inc → No 1 Loading Dock; 1975-01-01 to 2006-03-19; source msha-controller-operator-history
- **controller_controls_mine:** Donald  Nicewonder → No 1 Loading Dock; 1975-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donald  Nicewonder → Virginia Energy Company Inc; 1975-01-01 to 2006-03-19; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → No 1 Loading Dock; 2005-11-02 to 2016-07-25; source msha-controller-operator-history
- **operator_operates_mine:** Twin Star Mining, Inc. → No 1 Loading Dock; 2006-03-20 to 2017-10-29; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Twin Star Mining, Inc.; 2006-03-20 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Donald  Nicewonder → Twin Star Mining, Inc.; 2006-03-20 to 2005-11-01; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources Holdings, Inc → No 1 Loading Dock; 2016-07-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources Holdings, Inc → Twin Star Mining, Inc.; 2016-07-26 to 2017-10-29; source msha-controller-operator-history
- **operator_operates_mine:** CM Mining, LLC → No 1 Loading Dock; 2017-10-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** G Dale  Murray et al → No 1 Loading Dock; 2017-10-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** G Dale  Murray et al → CM Mining, LLC; 2017-10-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Crowder et al → CM Mining, LLC; 2017-10-30 to current/open; source msha-controller-operator-history