# Relationship history for MSHA mine 0102974

Current hierarchy: **Trotter Carl J Jr → Jack Trotter Jr Coal Company → Cane Creek 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Trotter Carl J Jr → Cane Creek Mine; 1990-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Jack Trotter Jr Coal Company → Cane Creek Mine; 1992-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Trotter Carl J Jr → Jack Trotter Jr Coal Company; 1992-09-01 to current/open; source msha-controller-operator-history