# Relationship history for MSHA mine 3609085

Current hierarchy: **Timothy C  Bosack; Robert B  Bosack → Ash Resources Inc → Newkirk**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Devil's Hole Inc. → Newkirk; 2002-05-14 to 2007-11-27; source msha-controller-operator-history
- **controller_controls_mine:** Gene B  Gangloff → Newkirk; 2002-05-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gene B  Gangloff → Devil's Hole Inc.; 2002-05-14 to 2007-11-27; source msha-controller-operator-history
- **controller_controls_mine:** Timothy C  Bosack  et al → Newkirk; 2007-05-07 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ash Resources Inc → Newkirk; 2007-11-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Timothy C  Bosack  et al → Ash Resources Inc; 2007-11-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert B  Bosack  et al → Ash Resources Inc; 2007-11-28 to current/open; source msha-controller-operator-history