# Relationship history for MSHA mine 1514866

Current hierarchy: **Barnette Pauline → Sugar Mining Company Inc → No 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:** Saiah D & F Engleman → No 1; 1984-03-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** B X Corp → No 1; 1984-09-01 to 1986-01-16; source msha-controller-operator-history
- **controller_controls_operator:** Saiah D & F Engleman → B X Corp; 1984-09-01 to 1986-01-16; source msha-controller-operator-history
- **operator_operates_mine:** Hillbilly Coal Company → No 1; 1986-01-17 to 1986-05-26; source msha-controller-operator-history
- **controller_controls_mine:** Hylton Freddie A → No 1; 1986-01-17 to 1986-05-26; source msha-controller-operator-history
- **controller_controls_operator:** Hylton Freddie A → Hillbilly Coal Company; 1986-01-17 to 1986-05-26; source msha-controller-operator-history
- **operator_operates_mine:** Sugar Mining Company Inc → No 1; 1986-05-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Barnette Pauline → No 1; 1986-05-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Barnette Pauline → Sugar Mining Company Inc; 1986-05-27 to current/open; source msha-controller-operator-history