# Relationship history for MSHA mine 0405141

Current hierarchy: **Leucadia Corp → Mk Gold Company → CASTLE MOUNTAIN MINE**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Mk Gold Company → CASTLE MOUNTAIN MINE; 1991-04-01 to 1995-08-28; source msha-controller-operator-history
- **controller_controls_mine:** Morrison Knudsen Corp (Old) → CASTLE MOUNTAIN MINE; 1991-04-01 to 1995-08-28; source msha-controller-operator-history
- **controller_controls_operator:** Morrison Knudsen Corp (Old) → Mk Gold Company; 1991-04-01 to 1995-08-28; source msha-controller-operator-history
- **operator_operates_mine:** Mk Gold Company → CASTLE MOUNTAIN MINE; 1995-08-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Leucadia Corp Et Al → CASTLE MOUNTAIN MINE; 1995-08-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Leucadia Corp Et Al → Mk Gold Company; 1995-08-29 to current/open; source msha-controller-operator-history