# Relationship history for MSHA mine 2003222

Current hierarchy: **Joseph M  Laier; Charles W  Laier → J & D Aggregate LLC → J & D Aggregate**

- 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:** Rock Solid Quarries → J & D Aggregate; 2001-07-01 to 2004-08-19; source msha-controller-operator-history
- **controller_controls_mine:** Vaughn L  Smith et al → J & D Aggregate; 2001-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vaughn L  Smith et al → Rock Solid Quarries; 2001-07-01 to 2004-08-19; source msha-controller-operator-history
- **operator_operates_mine:** J & D Aggregate LLC → J & D Aggregate; 2004-08-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Joseph M  Laier et al → J & D Aggregate; 2004-08-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joseph M  Laier et al → J & D Aggregate LLC; 2004-08-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles W  Laier et al → J & D Aggregate LLC; 2004-08-20 to current/open; source msha-controller-operator-history