# Relationship history for MSHA mine 4003174

Current hierarchy: **Jack  Lowery; Don  Chambers → Lojac Enterprises Inc → LOJAC SMITH COUNTY QUARRY**

- 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:** Lojac Enterprises Inc → LOJAC SMITH COUNTY QUARRY; 2001-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jack  Lowery et al → LOJAC SMITH COUNTY QUARRY; 2001-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jack  Lowery et al → Lojac Enterprises Inc; 2001-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Don  Chambers et al → Lojac Enterprises Inc; 2001-07-01 to current/open; source msha-controller-operator-history