# Relationship history for MSHA mine 3604866

Current hierarchy: **Shalamanda Joseph → Joe Shalamanda Coal Company → No 4 Vein Slope**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Shalamanda Steve → No 4 Vein Slope; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Shally Coal Company → No 4 Vein Slope; 1973-12-21 to 1977-01-04; source msha-controller-operator-history
- **controller_controls_operator:** Shalamanda Steve → Shally Coal Company; 1973-12-21 to 1977-01-04; source msha-controller-operator-history
- **controller_controls_mine:** Smith Darvin C--Allen R Kramer Et Al → No 4 Vein Slope; 1974-04-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Silver Coal Company → No 4 Vein Slope; 1977-01-05 to 1977-06-12; source msha-controller-operator-history
- **controller_controls_mine:** Geist Ronald & Lester E Williams → No 4 Vein Slope; 1977-01-05 to 1977-06-12; source msha-controller-operator-history
- **controller_controls_operator:** Geist Ronald & Lester E Williams → Silver Coal Company; 1977-01-05 to 1977-06-12; source msha-controller-operator-history
- **operator_operates_mine:** K & S Coal Company → No 4 Vein Slope; 1977-06-13 to 1977-12-06; source msha-controller-operator-history
- **controller_controls_operator:** Smith Darvin C--Allen R Kramer Et Al → K & S Coal Company; 1977-06-13 to 1977-12-06; source msha-controller-operator-history
- **operator_operates_mine:** Shally Coal Company → No 4 Vein Slope; 1977-12-07 to 1978-08-22; source msha-controller-operator-history
- **controller_controls_operator:** Shalamanda Steve → Shally Coal Company; 1977-12-07 to 1978-08-22; source msha-controller-operator-history
- **operator_operates_mine:** Joe Shalamanda Coal Company → No 4 Vein Slope; 1978-08-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Shalamanda Joseph → No 4 Vein Slope; 1978-08-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Shalamanda Joseph → Joe Shalamanda Coal Company; 1978-08-23 to current/open; source msha-controller-operator-history