# Relationship history for MSHA mine 1515865

Current hierarchy: **Ronnie  Thacker; Freddy  Thacker → Wolf Branch Collieries Inc → Mine No 1**

- 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

- **operator_operates_mine:** Wolf Branch Collieries Inc → Mine No 1; 1986-12-01 to 1988-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Lowe Moses → Mine No 1; 1986-12-01 to 1988-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Lowe Moses → Wolf Branch Collieries Inc; 1986-12-01 to 1988-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Wolf Branch Collieries Inc → Mine No 1; 1988-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Freddy  Thacker et al → Mine No 1; 1988-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Freddy  Thacker et al → Wolf Branch Collieries Inc; 1988-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ronnie  Thacker et al → Wolf Branch Collieries Inc; 1988-06-01 to current/open; source msha-controller-operator-history