# Relationship history for MSHA mine 4002983

Current hierarchy: **Layne Helen M → New Hope Mining Inc → No 62**

- 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:** Massey Energy Company → No 62; 1976-09-01 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Higgins Daniel → No 62; 1984-01-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tennessee Consolidated Coal Company → No 62; 1988-04-01 to 1990-09-16; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Tennessee Consolidated Coal Company; 1988-04-01 to 1990-09-16; source msha-controller-operator-history
- **operator_operates_mine:** Higgins Coal Company Inc → No 62; 1990-09-17 to 1992-04-07; source msha-controller-operator-history
- **controller_controls_operator:** Higgins Daniel → Higgins Coal Company Inc; 1990-09-17 to 1992-04-07; source msha-controller-operator-history
- **controller_controls_mine:** Layne Helen M → No 62; 1991-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rife Larry M → No 62; 1992-03-16 to 1992-07-06; source msha-controller-operator-history
- **operator_operates_mine:** Eastern Coal Company → No 62; 1992-04-08 to 1992-06-03; source msha-controller-operator-history
- **controller_controls_operator:** Rife Larry M → Eastern Coal Company; 1992-04-08 to 1992-06-03; source msha-controller-operator-history
- **operator_operates_mine:** New Hope Mining Inc → No 62; 1992-06-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Layne Helen M → New Hope Mining Inc; 1992-06-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → No 62; 2011-06-01 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Tennessee Consolidated Coal Company; 2011-06-01 to 1990-09-16; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources Holdings, Inc → No 62; 2016-07-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources Holdings, Inc → Tennessee Consolidated Coal Company; 2016-07-26 to 1990-09-16; source msha-controller-operator-history