# Relationship history for MSHA mine 1517886

Current hierarchy: **Roy  Parsons → Kipar Inc → Mine No 3**

- 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:** Roy  Parsons → Mine No 3; 1994-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kipar Inc → Mine No 3; 1997-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Roy  Parsons → Kipar Inc; 1997-01-01 to current/open; source msha-controller-operator-history