# Relationship history for MSHA mine 1508047

Current hierarchy: **Geo-Energy Ltd → Bledsoe Coal Company Inc → Mine 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:** Simpson James W → Mine No 2; 1973-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Skyuka Mining Corp → Mine No 2; 1975-01-01 to 1975-08-05; source msha-controller-operator-history
- **controller_controls_operator:** Simpson James W → Skyuka Mining Corp; 1975-01-01 to 1975-08-05; source msha-controller-operator-history
- **controller_controls_mine:** T W Oil Inc → Mine No 2; 1975-07-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Joc Coal Mining Inc → Mine No 2; 1975-08-06 to 1977-11-13; source msha-controller-operator-history
- **controller_controls_operator:** T W Oil Inc → Joc Coal Mining Inc; 1975-08-06 to 1977-11-13; source msha-controller-operator-history
- **controller_controls_mine:** Kilgore Danny → Mine No 2; 1977-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Daisy Mining Company → Mine No 2; 1977-11-14 to 1978-08-28; source msha-controller-operator-history
- **controller_controls_operator:** Kilgore Danny → Daisy Mining Company; 1977-11-14 to 1978-08-28; source msha-controller-operator-history
- **controller_controls_mine:** Cardinal Resources Inc → Mine No 2; 1978-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kenflo Coal Company → Mine No 2; 1978-08-29 to 1979-08-22; source msha-controller-operator-history
- **controller_controls_mine:** Crutchfield Leo → Mine No 2; 1978-08-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Crutchfield Leo → Kenflo Coal Company; 1978-08-29 to 1979-08-22; source msha-controller-operator-history
- **operator_operates_mine:** Cardinal Resources Inc → Mine No 2; 1979-08-23 to 1980-08-10; source msha-controller-operator-history
- **controller_controls_operator:** Cardinal Resources Inc → Cardinal Resources Inc; 1979-08-23 to 1980-08-10; source msha-controller-operator-history
- **operator_operates_mine:** Bledsoe Coal Company Inc → Mine No 2; 1980-08-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Geo-Energy Ltd → Mine No 2; 1980-08-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Geo-Energy Ltd → Bledsoe Coal Company Inc; 1980-08-11 to current/open; source msha-controller-operator-history