# Relationship history for MSHA mine 1514337

Current hierarchy: **Berry Oliver → Berry'S Welding & Fabrication Inc → Del-Reb Mining**

- 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:** Peyton W Lloyd → Del-Reb Mining; 1981-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Del-Reb Mining Inc → Del-Reb Mining; 1983-11-01 to 1984-08-16; source msha-controller-operator-history
- **controller_controls_operator:** Peyton W Lloyd → Del-Reb Mining Inc; 1983-11-01 to 1984-08-16; source msha-controller-operator-history
- **operator_operates_mine:** Berry'S Welding & Fabrication Inc → Del-Reb Mining; 1984-08-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Berry Oliver → Del-Reb Mining; 1984-08-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Berry Oliver → Berry'S Welding & Fabrication Inc; 1984-08-17 to current/open; source msha-controller-operator-history