# Relationship history for MSHA mine 3002045

Current hierarchy: **Town Of Burdett-NY → TOWN OF HECTOR → PORTEC KOLBERG #1130-50  S#488411305084**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Dale A Reynolds Excavating → PORTEC KOLBERG #1130-50  S#488411305084; 1950-01-01 to 1979-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Reynolds Dale A & Kenneth Appel → PORTEC KOLBERG #1130-50  S#488411305084; 1950-01-01 to 1979-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Reynolds Dale A & Kenneth Appel → Dale A Reynolds Excavating; 1950-01-01 to 1979-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Tall Gravel Products Inc → PORTEC KOLBERG #1130-50  S#488411305084; 1979-05-01 to 2001-05-23; source msha-controller-operator-history
- **controller_controls_mine:** Templar Roger → PORTEC KOLBERG #1130-50  S#488411305084; 1979-05-01 to 2001-05-23; source msha-controller-operator-history
- **controller_controls_operator:** Templar Roger → Tall Gravel Products Inc; 1979-05-01 to 2001-05-23; source msha-controller-operator-history
- **operator_operates_mine:** Town Of Hector → PORTEC KOLBERG #1130-50  S#488411305084; 2001-05-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Town Of Burdett-NY → PORTEC KOLBERG #1130-50  S#488411305084; 2001-05-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Town Of Burdett-NY → Town Of Hector; 2001-05-24 to current/open; source msha-controller-operator-history