# Relationship history for MSHA mine 1400512

Current hierarchy: **George A  Pearson Jr → Miles Sand Inc → Miles Sand Incorporated**

- 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:** Miles Sand Inc → Miles Sand Incorporated; 1950-01-01 to 1986-08-31; source msha-controller-operator-history
- **controller_controls_mine:** V Harley  Miles → Miles Sand Incorporated; 1950-01-01 to 1986-08-31; source msha-controller-operator-history
- **controller_controls_operator:** V Harley  Miles → Miles Sand Inc; 1950-01-01 to 1986-08-31; source msha-controller-operator-history
- **operator_operates_mine:** Miles Sand Inc → Miles Sand Incorporated; 1986-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** George A  Pearson Jr → Miles Sand Incorporated; 1986-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** George A  Pearson Jr → Miles Sand Inc; 1986-09-01 to current/open; source msha-controller-operator-history