# Relationship history for MSHA mine 1202342

Current hierarchy: **Kevin R  Kiesel; Keith M  Naas → Gibson County Sand & Gravel Inc → Gibson County Sand & Gravel**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Gibson County Sand & Gravel Inc → Gibson County Sand & Gravel; 2003-02-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Keith M  Naas  et al → Gibson County Sand & Gravel; 2003-02-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Keith M  Naas  et al → Gibson County Sand & Gravel Inc; 2003-02-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kevin R  Kiesel  et al → Gibson County Sand & Gravel Inc; 2003-02-06 to current/open; source msha-controller-operator-history