# Relationship history for MSHA mine 1519482

Current hierarchy: **J Mark  Campbell → Apex Energy, Inc. → Clintwood Face Up**

- 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:** James H  Booth et al → Clintwood Face Up; 2000-08-11 to 2019-06-15; source msha-controller-operator-history
- **controller_controls_mine:** Paul R  Belcher II → Clintwood Face Up; 2008-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Belcher & Company Excavating Inc. → Clintwood Face Up; 2010-04-07 to 2015-11-05; source msha-controller-operator-history
- **controller_controls_operator:** Paul R  Belcher II → Belcher & Company Excavating Inc.; 2010-04-07 to 2015-11-05; source msha-controller-operator-history
- **operator_operates_mine:** Apex Energy, Inc. → Clintwood Face Up; 2015-11-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James H  Booth et al → Apex Energy, Inc.; 2015-11-06 to 2019-06-15; source msha-controller-operator-history
- **controller_controls_mine:** J Mark  Campbell → Clintwood Face Up; 2019-06-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** J Mark  Campbell → Apex Energy, Inc.; 2019-06-16 to current/open; source msha-controller-operator-history