# Relationship history for MSHA mine 3609352

Current hierarchy: **Timothy C  Bosack; Robert B  Bosack → Ash Resources Inc. → Bank 42B**

- 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:** Mid Valley Coal Sales → Bank 42B; 2005-07-19 to 2009-08-12; source msha-controller-operator-history
- **controller_controls_mine:** Michael  Guarna et al → Bank 42B; 2005-07-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Guarna et al → Mid Valley Coal Sales; 2005-07-19 to 2009-08-12; source msha-controller-operator-history
- **controller_controls_operator:** Vincent  Guarna et al → Mid Valley Coal Sales; 2005-07-19 to 2009-08-12; source msha-controller-operator-history
- **controller_controls_mine:** Timothy C  Bosack  et al → Bank 42B; 2007-05-07 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ash Resources Inc. → Bank 42B; 2009-08-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Timothy C  Bosack  et al → Ash Resources Inc.; 2009-08-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert B  Bosack  et al → Ash Resources Inc.; 2009-08-13 to current/open; source msha-controller-operator-history