# Relationship history for MSHA mine 4406989

Current hierarchy: **Rifle Coal Company; Anthony  Frederick → Associated Contracting Llc → Cedar Branch Surface**

- 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:** TECO Energy Inc → Cedar Branch Surface; 1988-04-26 to 2015-09-20; source msha-controller-operator-history
- **operator_operates_mine:** Clintwood Elkhorn Mining Company Inc → Cedar Branch Surface; 2000-04-01 to 2000-08-03; source msha-controller-operator-history
- **controller_controls_operator:** TECO Energy Inc → Clintwood Elkhorn Mining Company Inc; 2000-04-01 to 2000-08-03; source msha-controller-operator-history
- **operator_operates_mine:** Associated Contracting LLC → Cedar Branch Surface; 2000-08-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rifle Coal Company et al → Cedar Branch Surface; 2000-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rifle Coal Company et al → Associated Contracting LLC; 2000-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Anthony  Frederick et al → Associated Contracting LLC; 2000-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James H  Booth et al → Cedar Branch Surface; 2015-09-21 to 2019-06-15; source msha-controller-operator-history
- **controller_controls_operator:** James H  Booth et al → Clintwood Elkhorn Mining Company Inc; 2015-09-21 to 2000-08-03; source msha-controller-operator-history
- **controller_controls_mine:** J Mark  Campbell → Cedar Branch Surface; 2019-06-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** J Mark  Campbell → Clintwood Elkhorn Mining Company Inc; 2019-06-16 to 2000-08-03; source msha-controller-operator-history