# Relationship history for MSHA mine 1202311

Current hierarchy: **Gregg  Klug; Dave  Cox → Indiana State Materials LLC → INDIANA STATE MATERIALS LLC**

- 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:** Indiana State Materials LLC → INDIANA STATE MATERIALS LLC; 2001-08-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gregg  Klug et al → INDIANA STATE MATERIALS LLC; 2001-08-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gregg  Klug et al → Indiana State Materials LLC; 2001-08-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dave  Cox et al → Indiana State Materials LLC; 2001-08-13 to current/open; source msha-controller-operator-history