# Relationship history for MSHA mine 4801512

Current hierarchy: **Carl E  Spomer → SPOMER CONSTRUCTION CO., INC. → Spomer #1**

- 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:** Lamax Construction Inc → Spomer #1; 1994-12-01 to 2014-10-21; source msha-controller-operator-history
- **controller_controls_mine:** Carol  Kestner → Spomer #1; 1994-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carol  Kestner → Lamax Construction Inc; 1994-12-01 to 2014-10-21; source msha-controller-operator-history
- **controller_controls_mine:** Carl E  Spomer → Spomer #1; 2006-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** SPOMER CONSTRUCTION CO., INC. → Spomer #1; 2014-10-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carl E  Spomer → SPOMER CONSTRUCTION CO., INC.; 2014-10-22 to current/open; source msha-controller-operator-history