# Relationship history for MSHA mine 3401788

Current hierarchy: **Don M  Donaho → Donaho Stone LLC. → DONAHO W 1**

- 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:** Donaho Construction → DONAHO W 1; 1995-05-01 to 2020-09-29; source msha-controller-operator-history
- **controller_controls_mine:** Don M  Donaho et al → DONAHO W 1; 1995-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Don M  Donaho et al → Donaho Construction; 1995-05-01 to 2020-09-29; source msha-controller-operator-history
- **controller_controls_mine:** Don M  Donaho et al → DONAHO W 1; 2011-03-11 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Donaho Stone LLC. → DONAHO W 1; 2020-09-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Don M  Donaho et al → Donaho Stone LLC.; 2020-09-30 to current/open; source msha-controller-operator-history