# Relationship history for MSHA mine 1515371

Current hierarchy: **Catsman Philip L → Jenson Straight Creek #6 → #6 Mine**

- 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:** Miller Branch Mining → #6 Mine; 1985-09-01 to 1985-10-23; source msha-controller-operator-history
- **controller_controls_mine:** Powers Tony & David Shelton → #6 Mine; 1985-09-01 to 1985-10-23; source msha-controller-operator-history
- **controller_controls_operator:** Powers Tony & David Shelton → Miller Branch Mining; 1985-09-01 to 1985-10-23; source msha-controller-operator-history
- **operator_operates_mine:** Jenson Straight Creek #6 → #6 Mine; 1985-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Catsman Philip L → #6 Mine; 1985-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Catsman Philip L → Jenson Straight Creek #6; 1985-10-24 to current/open; source msha-controller-operator-history