# Relationship history for MSHA mine 4405547

Current hierarchy: **Alpha Natural Resources, Inc. → Knox Creek Coal Corp → Red Dog #3**

- 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:** David M  Maynard → Red Dog #3; 1977-05-05 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mabo Coal Company Inc → Red Dog #3; 1980-11-01 to 1989-01-08; source msha-controller-operator-history
- **controller_controls_operator:** David M  Maynard → Mabo Coal Company Inc; 1980-11-01 to 1989-01-08; source msha-controller-operator-history
- **controller_controls_mine:** Ronnie A  Edwards → Red Dog #3; 1982-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Red Dog Coal Corp → Red Dog #3; 1989-01-09 to 1999-04-07; source msha-controller-operator-history
- **controller_controls_operator:** Ronnie A  Edwards → Red Dog Coal Corp; 1989-01-09 to 1999-04-07; source msha-controller-operator-history
- **controller_controls_mine:** Massey Energy Company → Red Dog #3; 1997-08-26 to 2011-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Knox Creek Coal Corp → Red Dog #3; 1999-04-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Knox Creek Coal Corp; 1999-04-08 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → Red Dog #3; 2011-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Knox Creek Coal Corp; 2011-06-01 to current/open; source msha-controller-operator-history