# Relationship history for MSHA mine 2601808

Current hierarchy: **Poe Don → Global Natural Resources Inc → Global 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:** Nevada Resources Corp → Global Mine; 1982-07-01 to 1983-01-04; source msha-controller-operator-history
- **controller_controls_mine:** Dale Bill → Global Mine; 1982-07-01 to 1983-01-04; source msha-controller-operator-history
- **controller_controls_operator:** Dale Bill → Nevada Resources Corp; 1982-07-01 to 1983-01-04; source msha-controller-operator-history
- **operator_operates_mine:** Global Natural Resources Inc → Global Mine; 1983-01-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Poe Don → Global Mine; 1983-01-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Poe Don → Global Natural Resources Inc; 1983-01-05 to current/open; source msha-controller-operator-history