# Relationship history for MSHA mine 2500529

Current hierarchy: **Steve  Barenberg → E.I.A. LLC → E.I.A. Sand and Gravel 2**

- 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:** Clarence Gillen Sand & Gravel → E.I.A. Sand and Gravel 2; 1950-01-01 to 2007-05-06; source msha-controller-operator-history
- **controller_controls_mine:** Clarence  Gillen → E.I.A. Sand and Gravel 2; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clarence  Gillen → Clarence Gillen Sand & Gravel; 1950-01-01 to 2007-05-06; source msha-controller-operator-history
- **controller_controls_mine:** Steve  Barenberg et al → E.I.A. Sand and Gravel 2; 2004-03-27 to 2020-01-30; source msha-controller-operator-history
- **operator_operates_mine:** E.I.A. LLC → E.I.A. Sand and Gravel 2; 2007-05-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steve  Barenberg et al → E.I.A. LLC; 2007-05-07 to 2020-01-30; source msha-controller-operator-history
- **controller_controls_operator:** Stacy  Barenberg et al → E.I.A. LLC; 2007-05-07 to 2020-01-30; source msha-controller-operator-history
- **controller_controls_mine:** Steve  Barenberg → E.I.A. Sand and Gravel 2; 2020-01-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steve  Barenberg → E.I.A. LLC; 2020-01-31 to current/open; source msha-controller-operator-history