# Relationship history for MSHA mine 4405063

Current hierarchy: **Adkins Delmar & Alonzo C Stallard → A & S Coal Company → No 3 Surface**

- 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:** Adkins Delmar & Alonzo C Stallard → No 3 Surface; 1977-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** A & S Coal Company → No 3 Surface; 1978-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Adkins Delmar & Alonzo C Stallard → A & S Coal Company; 1978-07-01 to current/open; source msha-controller-operator-history