# Relationship history for MSHA mine 1300691

Current hierarchy: **L G Everist Inc → L.G. EVERIST, INC. → LGEX-Perm-Akron**

- 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:** L G Everist Inc → LGEX-Perm-Akron; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Higman Sand & Gravel Inc → LGEX-Perm-Akron; 1950-01-01 to 2015-02-12; source msha-controller-operator-history
- **controller_controls_mine:** Justin  Higman et al → LGEX-Perm-Akron; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Justin  Higman et al → Higman Sand & Gravel Inc; 1950-01-01 to 2015-02-12; source msha-controller-operator-history
- **operator_operates_mine:** L.G. EVERIST, INC. → LGEX-Perm-Akron; 2015-02-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** L G Everist Inc → L.G. EVERIST, INC.; 2015-02-13 to current/open; source msha-controller-operator-history