# Relationship history for MSHA mine 2401784

Current hierarchy: **Matthew  Ratteree → Belmont Mining & Explorations → Norweigen**

- 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:** Norweigen Minerals → Norweigen; 1985-05-01 to 2008-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Norweigen Minerals → Norweigen; 1985-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Norweigen Minerals → Norweigen Minerals; 1985-05-01 to 2008-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Belmont Mining & Explorations → Norweigen; 2009-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Matthew  Ratteree → Norweigen; 2009-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Matthew  Ratteree → Belmont Mining & Explorations; 2009-01-01 to current/open; source msha-controller-operator-history