# Relationship history for MSHA mine 4405062

Current hierarchy: **Sullivan Calvin → Anna Marie Coal Company Inc → Anna Marie #1**

- 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:** Deel Omalene-Allene & Nubern--Gary Baker → Anna Marie #1; 1977-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Frying Pan Coal Company → Anna Marie #1; 1978-06-01 to 1978-08-02; source msha-controller-operator-history
- **controller_controls_operator:** Deel Omalene-Allene & Nubern--Gary Baker → Frying Pan Coal Company; 1978-06-01 to 1978-08-02; source msha-controller-operator-history
- **operator_operates_mine:** Anna Marie Coal Company Inc → Anna Marie #1; 1978-08-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Sullivan Calvin → Anna Marie #1; 1978-08-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sullivan Calvin → Anna Marie Coal Company Inc; 1978-08-03 to current/open; source msha-controller-operator-history