# Relationship history for MSHA mine 5001377

Current hierarchy: **Cullett Theresa A → Cullett Mining → Upper Speaker 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:** Hank Speaker → Upper Speaker Mine; 1980-07-01 to 1984-06-04; source msha-controller-operator-history
- **controller_controls_mine:** Speaker Hank → Upper Speaker Mine; 1980-07-01 to 1984-06-04; source msha-controller-operator-history
- **controller_controls_operator:** Speaker Hank → Hank Speaker; 1980-07-01 to 1984-06-04; source msha-controller-operator-history
- **operator_operates_mine:** Cullett Mining → Upper Speaker Mine; 1984-06-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cullett Theresa A → Upper Speaker Mine; 1984-06-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cullett Theresa A → Cullett Mining; 1984-06-05 to current/open; source msha-controller-operator-history