# Relationship history for MSHA mine 2600843

Current hierarchy: **Neeser Earl → Earl Neeser → Goldfield Mine**

- 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:** Earl Neeser → Goldfield Mine; 1950-01-01 to 1978-04-24; source msha-controller-operator-history
- **controller_controls_mine:** Neeser Earl → Goldfield Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Neeser Earl → Earl Neeser; 1950-01-01 to 1978-04-24; source msha-controller-operator-history
- **operator_operates_mine:** Gerald R Neeser → Goldfield Mine; 1978-04-25 to 1979-03-21; source msha-controller-operator-history
- **controller_controls_mine:** Neeser Gerald R → Goldfield Mine; 1978-04-25 to 1979-03-21; source msha-controller-operator-history
- **controller_controls_operator:** Neeser Gerald R → Gerald R Neeser; 1978-04-25 to 1979-03-21; source msha-controller-operator-history
- **operator_operates_mine:** Earl Neeser → Goldfield Mine; 1979-03-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Neeser Earl → Earl Neeser; 1979-03-22 to current/open; source msha-controller-operator-history