# Relationship history for MSHA mine 2600964

Current hierarchy: **Blue Moon Metals (US) Inc. → Blue Moon Springer Inc. → Springer 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Utah International Inc → Springer Mine; 1950-01-01 to 1984-04-01; source msha-controller-operator-history
- **controller_controls_mine:** General Electric Company → Springer Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** General Electric Company → Utah International Inc; 1950-01-01 to 1984-04-01; source msha-controller-operator-history
- **operator_operates_mine:** Utah International Inc → Springer Mine; 1984-04-02 to 1994-01-04; source msha-controller-operator-history
- **controller_controls_mine:** Broken Hill Proprietary Co Ltd Et Al → Springer Mine; 1984-04-02 to 1994-01-04; source msha-controller-operator-history
- **controller_controls_operator:** Broken Hill Proprietary Co Ltd Et Al → Utah International Inc; 1984-04-02 to 1994-01-04; source msha-controller-operator-history
- **operator_operates_mine:** Springer Mining Company → Springer Mine; 1994-01-05 to 2026-06-15; source msha-controller-operator-history
- **controller_controls_mine:** General Electric Company → Springer Mine; 1994-01-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** General Electric Company → Springer Mining Company; 1994-01-05 to 2026-06-15; source msha-controller-operator-history
- **operator_operates_mine:** Blue Moon Springer Inc. → Springer Mine; 2026-06-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Blue Moon Metals (US) Inc. → Springer Mine; 2026-06-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Blue Moon Metals (US) Inc. → Blue Moon Springer Inc.; 2026-06-16 to current/open; source msha-controller-operator-history