# Relationship history for MSHA mine 3605609

Current hierarchy: **Benack Arnold → Large Coal Company Inc → Resources Land Strip**

- 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:** Joseph Herzog Company Inc → Resources Land Strip; 1975-05-01 to 1976-06-06; source msha-controller-operator-history
- **controller_controls_mine:** Herzog Joseph → Resources Land Strip; 1975-05-01 to 1976-06-06; source msha-controller-operator-history
- **controller_controls_operator:** Herzog Joseph → Joseph Herzog Company Inc; 1975-05-01 to 1976-06-06; source msha-controller-operator-history
- **operator_operates_mine:** Chestnut Coal Company Inc → Resources Land Strip; 1976-06-07 to 1976-11-12; source msha-controller-operator-history
- **controller_controls_mine:** Wingrove William E Et Al → Resources Land Strip; 1976-06-07 to 1976-11-12; source msha-controller-operator-history
- **controller_controls_operator:** Wingrove William E Et Al → Chestnut Coal Company Inc; 1976-06-07 to 1976-11-12; source msha-controller-operator-history
- **operator_operates_mine:** Large Coal Company Inc → Resources Land Strip; 1976-11-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Benack Arnold → Resources Land Strip; 1976-11-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Benack Arnold → Large Coal Company Inc; 1976-11-13 to current/open; source msha-controller-operator-history