# Relationship history for MSHA mine 4104581

Current hierarchy: **Gail R.  Flach → Gail R. Flach → Coffee Hollow Limestone**

- 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:** Gail R. Flach → Coffee Hollow Limestone; 2006-03-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gail R.  Flach → Coffee Hollow Limestone; 2006-03-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gail R.  Flach → Gail R. Flach; 2006-03-07 to current/open; source msha-controller-operator-history