# Relationship history for MSHA mine 3304259

Current hierarchy: **Danny R  Drake → Drakes Excavating → DRAKES EX.**

- 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:** Meister Sand & Gravel → DRAKES EX.; 1992-02-01 to 1998-09-07; source msha-controller-operator-history
- **controller_controls_mine:** Tim  Meister → DRAKES EX.; 1992-02-01 to 1998-09-07; source msha-controller-operator-history
- **controller_controls_operator:** Tim  Meister → Meister Sand & Gravel; 1992-02-01 to 1998-09-07; source msha-controller-operator-history
- **operator_operates_mine:** Drakes Excavating → DRAKES EX.; 1998-09-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Danny R  Drake → DRAKES EX.; 1998-09-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Danny R  Drake → Drakes Excavating; 1998-09-08 to current/open; source msha-controller-operator-history