# Relationship history for MSHA mine 1300997

Current hierarchy: **Manaco Corporation → Wendling Quarries Inc. → Disterhoft Pit Dept. 483**

- 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

- **operator_operates_mine:** Marengo Ready Mix Inc. → Disterhoft Pit Dept. 483; 1950-01-01 to 2024-03-31; source msha-controller-operator-history
- **controller_controls_mine:** James  Disterhoft → Disterhoft Pit Dept. 483; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Disterhoft → Marengo Ready Mix Inc.; 1950-01-01 to 2024-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Manaco Corporation → Disterhoft Pit Dept. 483; 1987-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Wendling Quarries Inc. → Disterhoft Pit Dept. 483; 2024-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Manaco Corporation → Wendling Quarries Inc.; 2024-04-01 to current/open; source msha-controller-operator-history