# Relationship history for MSHA mine 0503827

Current hierarchy: **Jacobs Edward → Starlite Associates Inc → Printer Boy 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:** Bradbury Independant Mining Company Inc → Printer Boy Mine; 1982-10-01 to 1987-01-07; source msha-controller-operator-history
- **controller_controls_mine:** Bradbury Samuel F → Printer Boy Mine; 1982-10-01 to 1987-01-07; source msha-controller-operator-history
- **controller_controls_operator:** Bradbury Samuel F → Bradbury Independant Mining Company Inc; 1982-10-01 to 1987-01-07; source msha-controller-operator-history
- **operator_operates_mine:** Starlite Associates Inc → Printer Boy Mine; 1987-01-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jacobs Edward → Printer Boy Mine; 1987-01-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jacobs Edward → Starlite Associates Inc; 1987-01-08 to current/open; source msha-controller-operator-history