# Relationship history for MSHA mine 4002630

Current hierarchy: **Smith James L & James T → Maury Phosphate Company → Little Lot Washer & 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:** M Glenn  West → Little Lot Washer & Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Davis W J Jr → Little Lot Washer & Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** M C West Inc → Little Lot Washer & Mine; 1980-06-01 to 1984-01-25; source msha-controller-operator-history
- **controller_controls_operator:** M Glenn  West → M C West Inc; 1980-06-01 to 1984-01-25; source msha-controller-operator-history
- **operator_operates_mine:** Davis Group Inc → Little Lot Washer & Mine; 1984-01-26 to 1984-06-06; source msha-controller-operator-history
- **controller_controls_operator:** Davis W J Jr → Davis Group Inc; 1984-01-26 to 1984-06-06; source msha-controller-operator-history
- **operator_operates_mine:** Maury Phosphate Company → Little Lot Washer & Mine; 1984-06-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Smith James L & James T → Little Lot Washer & Mine; 1984-06-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Smith James L & James T → Maury Phosphate Company; 1984-06-07 to current/open; source msha-controller-operator-history