# Relationship history for MSHA mine 4003602

Current hierarchy: **Armada Materials LLC → VOLUNTEER MATERIALS LLC → VOLUNTEER MATERIALS - SHELBYVILLE**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Norma  Wright  et al → VOLUNTEER MATERIALS - SHELBYVILLE; 1996-01-01 to 2001-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Todd  Carson et al → VOLUNTEER MATERIALS - SHELBYVILLE; 2007-07-25 to 2023-11-15; source msha-controller-operator-history
- **controller_controls_mine:** Thomas Perry  Wright → VOLUNTEER MATERIALS - SHELBYVILLE; 2023-03-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Custom Stone → VOLUNTEER MATERIALS - SHELBYVILLE; 2023-05-15 to 2024-02-06; source msha-controller-operator-history
- **controller_controls_operator:** Thomas Perry  Wright → Custom Stone; 2023-05-15 to 2024-02-06; source msha-controller-operator-history
- **controller_controls_operator:** Norma  Wright  et al → Custom Stone; 2023-05-15 to 2001-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Armada Materials LLC → VOLUNTEER MATERIALS - SHELBYVILLE; 2023-11-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** VOLUNTEER MATERIALS LLC → VOLUNTEER MATERIALS - SHELBYVILLE; 2024-02-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Todd  Carson et al → VOLUNTEER MATERIALS LLC; 2024-02-07 to 2023-11-15; source msha-controller-operator-history
- **controller_controls_operator:** Armada Materials LLC → VOLUNTEER MATERIALS LLC; 2024-02-07 to current/open; source msha-controller-operator-history