# Relationship history for MSHA mine 4003464

Current hierarchy: **Ed  Wiley; Jimmy  Hood → Top of the Mountain Stone → Hood Quarry**

- 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:** Top of the Mountain Stone → Hood Quarry; 2016-10-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ed  Wiley et al → Hood Quarry; 2016-10-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ed  Wiley et al → Top of the Mountain Stone; 2016-10-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jimmy  Hood et al → Top of the Mountain Stone; 2016-10-06 to current/open; source msha-controller-operator-history