# Relationship history for MSHA mine 4606757

Current hierarchy: **Motto John → Solomon'S Mine Inc → No 2 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

- **controller_controls_mine:** Nelson Phillip E & John Motto → No 2 Mine; 1981-06-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Joshua Industries Inc → No 2 Mine; 1984-03-01 to 1985-08-25; source msha-controller-operator-history
- **controller_controls_operator:** Nelson Phillip E & John Motto → Joshua Industries Inc; 1984-03-01 to 1985-08-25; source msha-controller-operator-history
- **operator_operates_mine:** Joshua Industries Inc → No 2 Mine; 1985-08-26 to 1988-03-15; source msha-controller-operator-history
- **controller_controls_mine:** Jeff  Chillag et al → No 2 Mine; 1985-08-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeff  Chillag et al → Joshua Industries Inc; 1985-08-26 to 1988-03-15; source msha-controller-operator-history
- **controller_controls_mine:** Motto John → No 2 Mine; 1987-09-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Solomon'S Mine Inc → No 2 Mine; 1988-03-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Motto John → Solomon'S Mine Inc; 1988-03-16 to current/open; source msha-controller-operator-history