# Relationship history for MSHA mine 5001980

Current hierarchy: **Paul  Nelson; John  Grasso; Bill  Sturgeon; Ward  Wondrasek → GWSN Ventures LLC → Chapman Creek**

- 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:** MacIsh Mining LLC → Chapman Creek; 2012-05-14 to 2024-02-18; source msha-controller-operator-history
- **controller_controls_mine:** Ronald Wayne  MacLaren → Chapman Creek; 2012-05-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ronald Wayne  MacLaren → MacIsh Mining LLC; 2012-05-14 to 2024-02-18; source msha-controller-operator-history
- **operator_operates_mine:** GWSN Ventures LLC → Chapman Creek; 2024-02-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bill  Sturgeon et al → Chapman Creek; 2024-02-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bill  Sturgeon et al → GWSN Ventures LLC; 2024-02-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Grasso et al → GWSN Ventures LLC; 2024-02-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ward  Wondrasek et al → GWSN Ventures LLC; 2024-02-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Paul  Nelson et al → GWSN Ventures LLC; 2024-02-19 to current/open; source msha-controller-operator-history