# Relationship history for MSHA mine 1512898

Current hierarchy: **Burns Geary → Mc Ginnis Coal Company Inc → No 2 Mine**

- 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 H  Booth et al → No 2 Mine; 1980-05-01 to 1988-06-12; source msha-controller-operator-history
- **operator_operates_mine:** Mc Ginnis Coal Company Inc → No 2 Mine; 1981-06-01 to 1988-06-12; source msha-controller-operator-history
- **controller_controls_operator:** James H  Booth et al → Mc Ginnis Coal Company Inc; 1981-06-01 to 1988-06-12; source msha-controller-operator-history
- **operator_operates_mine:** Mc Ginnis Coal Company Inc → No 2 Mine; 1988-06-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Burns Geary → No 2 Mine; 1988-06-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Burns Geary → Mc Ginnis Coal Company Inc; 1988-06-13 to current/open; source msha-controller-operator-history