# Relationship history for MSHA mine 2602142

Current hierarchy: **MCC Development Corporation → Nevada Ready Mix Corporation → Lone Mountain Pit**

- 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

- **controller_controls_mine:** Mitsubishi Corp → Lone Mountain Pit; 1988-12-01 to 2023-02-13; source msha-controller-operator-history
- **operator_operates_mine:** Nevada Ready Mix Corporation → Lone Mountain Pit; 1990-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mitsubishi Corp → Nevada Ready Mix Corporation; 1990-01-01 to 2023-02-13; source msha-controller-operator-history
- **controller_controls_mine:** MCC Development Corporation → Lone Mountain Pit; 2023-02-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** MCC Development Corporation → Nevada Ready Mix Corporation; 2023-02-14 to current/open; source msha-controller-operator-history