# Relationship history for MSHA mine 3003999

Current hierarchy: **James E  Sheehan → J.E. Sheehan Contracting Corp. → JCI Plant 13520241**

- 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:** James E  Sheehan → JCI Plant 13520241; 1995-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** J.E. Sheehan Contracting Corp. → JCI Plant 13520241; 2017-08-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James E  Sheehan → J.E. Sheehan Contracting Corp.; 2017-08-23 to current/open; source msha-controller-operator-history