# Relationship history for MSHA mine 2601670

Current hierarchy: **Witts David & Max Mc Crosky → Iron Triangle Mines → Wide Awake 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

- **operator_operates_mine:** Iron Triangle Mines → Wide Awake Mine; 1980-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Witts David & Max Mc Crosky → Wide Awake Mine; 1980-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Witts David & Max Mc Crosky → Iron Triangle Mines; 1980-09-01 to current/open; source msha-controller-operator-history