# Relationship history for MSHA mine 4002755

Current hierarchy: **Stockwell Lonnie R → Faith Coal Company → Mine No 15**

- 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:** Stockwell Lonnie R → Mine No 15; 1981-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sourwood Coal Company Inc → Mine No 15; 1981-11-01 to 1988-04-26; source msha-controller-operator-history
- **controller_controls_mine:** Crabtree Alfred-Roger T Et Al → Mine No 15; 1981-11-01 to 1988-04-26; source msha-controller-operator-history
- **controller_controls_operator:** Crabtree Alfred-Roger T Et Al → Sourwood Coal Company Inc; 1981-11-01 to 1988-04-26; source msha-controller-operator-history
- **operator_operates_mine:** Faith Coal Company → Mine No 15; 1988-04-27 to 1995-06-29; source msha-controller-operator-history
- **controller_controls_operator:** Stockwell Lonnie R → Faith Coal Company; 1988-04-27 to 1995-06-29; source msha-controller-operator-history
- **controller_controls_mine:** Massey Energy Company → Mine No 15; 1992-05-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tennessee Energy Corp → Mine No 15; 1995-06-30 to 1997-10-13; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Tennessee Energy Corp; 1995-06-30 to 1997-10-13; source msha-controller-operator-history
- **operator_operates_mine:** Faith Coal Company → Mine No 15; 1997-10-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stockwell Lonnie R → Faith Coal Company; 1997-10-14 to current/open; source msha-controller-operator-history