# Relationship history for MSHA mine 0404671

Current hierarchy: **Herron Allen → Herron Construction Inc → Governor 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Governor Mining & Engineering → Governor Mine; 1983-10-01 to 1984-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Herron Allen-Patrick F Chiodo Et Al → Governor Mine; 1983-10-01 to 1984-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Herron Allen-Patrick F Chiodo Et Al → Governor Mining & Engineering; 1983-10-01 to 1984-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Herron Construction Inc → Governor Mine; 1985-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Herron Allen → Governor Mine; 1985-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Herron Allen → Herron Construction Inc; 1985-01-01 to current/open; source msha-controller-operator-history