# Relationship history for MSHA mine 3609060

Current hierarchy: **Mark P  Shingara → Mark P. Shingara Coal → Mark P. Shingara Coal**

- 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:** Mark P  Shingara → Mark P. Shingara Coal; 1993-01-27 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Dan Shingara Jr. Coal Co. → Mark P. Shingara Coal; 2002-01-31 to 2004-04-19; source msha-controller-operator-history
- **controller_controls_mine:** Daniel  Shingara Jr → Mark P. Shingara Coal; 2002-01-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Daniel  Shingara Jr → Dan Shingara Jr. Coal Co.; 2002-01-31 to 2004-04-19; source msha-controller-operator-history
- **operator_operates_mine:** Mark P. Shingara Coal → Mark P. Shingara Coal; 2004-04-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark P  Shingara → Mark P. Shingara Coal; 2004-04-20 to current/open; source msha-controller-operator-history