# Relationship history for MSHA mine 1518815

Current hierarchy: **Timothy R  Dye → D&D Mining Inc → #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

- **controller_controls_mine:** Tony R  Boyd → #1; 2001-02-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Miracle Coal Inc. → #1; 2004-11-02 to 2004-12-15; source msha-controller-operator-history
- **controller_controls_operator:** Tony R  Boyd → Miracle Coal Inc.; 2004-11-02 to 2004-12-15; source msha-controller-operator-history
- **operator_operates_mine:** D&D Mining Inc → #1; 2004-12-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Timothy R  Dye → #1; 2004-12-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Timothy R  Dye → D&D Mining Inc; 2004-12-16 to current/open; source msha-controller-operator-history