# Relationship history for MSHA mine 1516945

Current hierarchy: **Joey  Taylor → Black Hawk Mng., Inc. → No. 2**

- 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 E  Baker et al → No. 2; 1988-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ryan Coal Company Inc → No. 2; 1990-08-01 to 2001-07-10; source msha-controller-operator-history
- **controller_controls_operator:** James E  Baker et al → Ryan Coal Company Inc; 1990-08-01 to 2001-07-10; source msha-controller-operator-history
- **controller_controls_mine:** Cliff  Bartley → No. 2; 1991-04-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cliffco Enterprise Inc → No. 2; 2001-07-11 to 2003-02-11; source msha-controller-operator-history
- **controller_controls_operator:** Cliff  Bartley → Cliffco Enterprise Inc; 2001-07-11 to 2003-02-11; source msha-controller-operator-history
- **controller_controls_mine:** Joey  Taylor → No. 2; 2002-12-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Black Hawk Mng., Inc. → No. 2; 2003-02-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joey  Taylor → Black Hawk Mng., Inc.; 2003-02-12 to current/open; source msha-controller-operator-history