# Relationship history for MSHA mine 3303704

Current hierarchy: **Thomas M  Hull; Michael P  Carlow → Sme Bessemer Cement Inc → Pine Lake**

- 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:** Moore Mining Company Inc → Pine Lake; 1978-08-01 to 1982-10-19; source msha-controller-operator-history
- **controller_controls_mine:** Moore Warren → Pine Lake; 1978-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Moore Warren → Moore Mining Company Inc; 1978-08-01 to 1982-10-19; source msha-controller-operator-history
- **operator_operates_mine:** Atwater Mining Corp → Pine Lake; 1982-10-20 to 1984-07-29; source msha-controller-operator-history
- **controller_controls_mine:** Kromer Howard C → Pine Lake; 1982-10-20 to 1984-07-29; source msha-controller-operator-history
- **controller_controls_operator:** Kromer Howard C → Atwater Mining Corp; 1982-10-20 to 1984-07-29; source msha-controller-operator-history
- **operator_operates_mine:** Sme Bessemer Cement Inc → Pine Lake; 1984-07-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Thomas M  Hull et al → Pine Lake; 1984-07-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas M  Hull et al → Sme Bessemer Cement Inc; 1984-07-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael P  Carlow et al → Sme Bessemer Cement Inc; 1984-07-30 to current/open; source msha-controller-operator-history