# Relationship history for MSHA mine 4003583

Current hierarchy: **Ned  Rich → CSH INC → Gizzard**

- 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:** CSH INC → Gizzard; 2022-10-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ned  Rich → Gizzard; 2022-10-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ned  Rich → CSH INC; 2022-10-26 to current/open; source msha-controller-operator-history