# Relationship history for MSHA mine 1519337

Current hierarchy: **Philip J  Senechal → Stafland Energy LLC → Island City**

- 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:** Stafland Energy LLC → Island City; 2008-11-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Philip J  Senechal → Island City; 2008-11-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Philip J  Senechal → Stafland Energy LLC; 2008-11-10 to current/open; source msha-controller-operator-history