# Relationship history for MSHA mine 4000758

Current hierarchy: **Ibex Inc & Kentucky Gem Ltd → Pic Company → P I C Company**

- 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:** Simcox Company → P I C Company; 1950-01-01 to 1975-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Simcox Company → P I C Company; 1950-01-01 to 1975-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Simcox Company → Simcox Company; 1950-01-01 to 1975-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Pic Company → P I C Company; 1975-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ibex Inc & Kentucky Gem Ltd → P I C Company; 1975-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ibex Inc & Kentucky Gem Ltd → Pic Company; 1975-06-01 to current/open; source msha-controller-operator-history