# Relationship history for MSHA mine 0102972

Current hierarchy: **Cupps Brian → Egypt Contracting Company Inc → Pocahontas**

- 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:** Rand S  Clark → Pocahontas; 1991-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Carbon Hill Coal Company Of Alabama Inc → Pocahontas; 1992-09-01 to 1994-05-15; source msha-controller-operator-history
- **controller_controls_mine:** Taylor Ellis → Pocahontas; 1992-09-01 to 1996-06-10; source msha-controller-operator-history
- **controller_controls_operator:** Taylor Ellis → Carbon Hill Coal Company Of Alabama Inc; 1992-09-01 to 1994-05-15; source msha-controller-operator-history
- **operator_operates_mine:** R C Enterprises → Pocahontas; 1994-05-16 to 1995-04-16; source msha-controller-operator-history
- **controller_controls_operator:** Rand S  Clark → R C Enterprises; 1994-05-16 to 1995-04-16; source msha-controller-operator-history
- **operator_operates_mine:** Coalbro Inc → Pocahontas; 1995-04-17 to 1995-07-05; source msha-controller-operator-history
- **controller_controls_mine:** Stricklin W L → Pocahontas; 1995-04-17 to 1995-07-05; source msha-controller-operator-history
- **controller_controls_operator:** Stricklin W L → Coalbro Inc; 1995-04-17 to 1995-07-05; source msha-controller-operator-history
- **operator_operates_mine:** Carbon Hill Coal Company Of Alabama Inc → Pocahontas; 1995-07-06 to 1996-06-10; source msha-controller-operator-history
- **controller_controls_operator:** Taylor Ellis → Carbon Hill Coal Company Of Alabama Inc; 1995-07-06 to 1996-06-10; source msha-controller-operator-history
- **operator_operates_mine:** Egypt Contracting Company Inc → Pocahontas; 1996-06-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cupps Brian → Pocahontas; 1996-06-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cupps Brian → Egypt Contracting Company Inc; 1996-06-11 to current/open; source msha-controller-operator-history