# Relationship history for MSHA mine 0503688

Current hierarchy: **Hull Jack J → Hull Mining Company → Hull 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:** Gold Ore Ltd Of Cripple Creek → Hull Mine; 1981-06-01 to 1988-07-26; source msha-controller-operator-history
- **controller_controls_mine:** Wallace Joe-Val Ginn Et Al → Hull Mine; 1981-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wallace Joe-Val Ginn Et Al → Gold Ore Ltd Of Cripple Creek; 1981-06-01 to 1988-07-26; source msha-controller-operator-history
- **controller_controls_mine:** Hull Jack J → Hull Mine; 1984-10-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hull Mining Company → Hull Mine; 1988-07-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hull Jack J → Hull Mining Company; 1988-07-27 to current/open; source msha-controller-operator-history