# Relationship history for MSHA mine 2401665

Current hierarchy: **Krause Kristin → Prometheus Gold Inc → Belmont 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

- **controller_controls_mine:** Brooks Fred H → Belmont Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cyprus Amax Minerals Company → Belmont Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Amax Exploration Inc → Belmont Mine; 1982-04-01 to 1984-02-26; source msha-controller-operator-history
- **controller_controls_operator:** Cyprus Amax Minerals Company → Amax Exploration Inc; 1982-04-01 to 1984-02-26; source msha-controller-operator-history
- **operator_operates_mine:** Brooks Minerals Inc → Belmont Mine; 1984-02-27 to 1984-10-16; source msha-controller-operator-history
- **controller_controls_operator:** Brooks Fred H → Brooks Minerals Inc; 1984-02-27 to 1984-10-16; source msha-controller-operator-history
- **operator_operates_mine:** Amax Exploration Inc → Belmont Mine; 1984-10-17 to 1987-04-08; source msha-controller-operator-history
- **controller_controls_operator:** Cyprus Amax Minerals Company → Amax Exploration Inc; 1984-10-17 to 1987-04-08; source msha-controller-operator-history
- **operator_operates_mine:** Gulf Titanium Inc → Belmont Mine; 1987-04-09 to 1993-03-29; source msha-controller-operator-history
- **controller_controls_mine:** Gulf Titanium Inc → Belmont Mine; 1987-04-09 to 1993-03-29; source msha-controller-operator-history
- **controller_controls_operator:** Gulf Titanium Inc → Gulf Titanium Inc; 1987-04-09 to 1993-03-29; source msha-controller-operator-history
- **operator_operates_mine:** Prometheus Gold Inc → Belmont Mine; 1993-03-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Krause Kristin → Belmont Mine; 1993-03-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Krause Kristin → Prometheus Gold Inc; 1993-03-30 to current/open; source msha-controller-operator-history