# Relationship history for MSHA mine 3503618

Current hierarchy: **Norman T  Jarvis; LeArla  Jarvis → Lee Valley Rock Products LLC → Lee Valley Rock Products LLC**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Lee Valley Rock Products LLC → Lee Valley Rock Products LLC; 2005-05-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Norman T  Jarvis et al → Lee Valley Rock Products LLC; 2005-05-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Norman T  Jarvis et al → Lee Valley Rock Products LLC; 2005-05-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** LeArla  Jarvis et al → Lee Valley Rock Products LLC; 2005-05-23 to current/open; source msha-controller-operator-history