# Relationship history for MSHA mine 1202155

Current hierarchy: **Sargent Jon → J L S Inc → Owen 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

- **controller_controls_mine:** Sargent Jon → Owen Mine; 1991-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** J L S Inc → Owen Mine; 1994-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sargent Jon → J L S Inc; 1994-03-01 to current/open; source msha-controller-operator-history