# Relationship history for MSHA mine 0102342

Current hierarchy: **H W L Development → H W L Development → Beasley Pit**

- 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:** West Central Sand & Gravel Company → Beasley Pit; 1981-07-01 to 1982-11-01; source msha-controller-operator-history
- **controller_controls_mine:** West Central Sand & Gravel Company → Beasley Pit; 1981-07-01 to 1982-11-01; source msha-controller-operator-history
- **controller_controls_operator:** West Central Sand & Gravel Company → West Central Sand & Gravel Company; 1981-07-01 to 1982-11-01; source msha-controller-operator-history
- **operator_operates_mine:** Winfield Sand & Gravel → Beasley Pit; 1982-11-02 to 1985-05-22; source msha-controller-operator-history
- **controller_controls_mine:** Beasley David H → Beasley Pit; 1982-11-02 to 1985-05-22; source msha-controller-operator-history
- **controller_controls_operator:** Beasley David H → Winfield Sand & Gravel; 1982-11-02 to 1985-05-22; source msha-controller-operator-history
- **operator_operates_mine:** H W L Development → Beasley Pit; 1985-05-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** H W L Development → Beasley Pit; 1985-05-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** H W L Development → H W L Development; 1985-05-23 to current/open; source msha-controller-operator-history