# Relationship history for MSHA mine 1508061

Current hierarchy: **Newsome Jay → Point Mining Company Inc → No 1 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:** Johns Barry Et Al → No 1 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Old South Mining Company Inc → No 1 Mine; 1975-01-01 to 1975-04-23; source msha-controller-operator-history
- **controller_controls_operator:** Johns Barry Et Al → Old South Mining Company Inc; 1975-01-01 to 1975-04-23; source msha-controller-operator-history
- **operator_operates_mine:** Point Mining Company Inc → No 1 Mine; 1975-04-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Newsome Jay → No 1 Mine; 1975-04-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Newsome Jay → Point Mining Company Inc; 1975-04-24 to current/open; source msha-controller-operator-history