# Relationship history for MSHA mine 1401514

Current hierarchy: **Robert C Caylor → Oswego Coal Company Inc → OSWEGO COAL COMPANY INC**

- 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:** William  Penny et al → OSWEGO COAL COMPANY INC; 1988-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Penny'S Concrete Inc → OSWEGO COAL COMPANY INC; 1992-01-20 to 1999-06-24; source msha-controller-operator-history
- **controller_controls_operator:** William  Penny et al → Penny'S Concrete Inc; 1992-01-20 to 1999-06-24; source msha-controller-operator-history
- **controller_controls_operator:** Marlene  Penny et al → Penny'S Concrete Inc; 1992-01-20 to 1999-06-24; source msha-controller-operator-history
- **operator_operates_mine:** Oswego Coal Company Inc → OSWEGO COAL COMPANY INC; 1999-06-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert C Caylor → OSWEGO COAL COMPANY INC; 1999-06-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert C Caylor → Oswego Coal Company Inc; 1999-06-25 to current/open; source msha-controller-operator-history