# Relationship history for MSHA mine 4300191

Current hierarchy: **Seth  Ames → Twin State Sand & Gravel Company Inc → White River Pit**

- 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:** Twin State Sand & Gravel Company Inc → White River Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Warren  Ames III → White River Pit; 1950-01-01 to 2023-10-13; source msha-controller-operator-history
- **controller_controls_operator:** Warren  Ames III → Twin State Sand & Gravel Company Inc; 1950-01-01 to 2023-10-13; source msha-controller-operator-history
- **controller_controls_mine:** Seth  Ames → White River Pit; 2023-10-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Seth  Ames → Twin State Sand & Gravel Company Inc; 2023-10-14 to current/open; source msha-controller-operator-history