# Relationship history for MSHA mine 0404458

Current hierarchy: **Terramar Resources Corp → T R C Resources Inc → Reid 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:** Shasta Bird Mine Associates → Reid Mine; 1980-09-01 to 1983-07-26; source msha-controller-operator-history
- **controller_controls_mine:** Shasta Mine Associates-Bird Drilling → Reid Mine; 1980-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Shasta Mine Associates-Bird Drilling → Shasta Bird Mine Associates; 1980-09-01 to 1983-07-26; source msha-controller-operator-history
- **operator_operates_mine:** T R C Resources Inc → Reid Mine; 1983-07-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Terramar Resources Corp → Reid Mine; 1983-07-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Terramar Resources Corp → T R C Resources Inc; 1983-07-27 to current/open; source msha-controller-operator-history