# Relationship history for MSHA mine 3300514

Current hierarchy: **Bowling Mark G → Orrville Tile & Flue Lining Inc → Orrville Tile & Flue Lining 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:** Orrville Tile Company → Orrville Tile & Flue Lining Incorporated; 1950-01-01 to 1984-08-14; source msha-controller-operator-history
- **controller_controls_mine:** Diller Ray E → Orrville Tile & Flue Lining Incorporated; 1950-01-01 to 1984-08-14; source msha-controller-operator-history
- **controller_controls_operator:** Diller Ray E → Orrville Tile Company; 1950-01-01 to 1984-08-14; source msha-controller-operator-history
- **operator_operates_mine:** Orrville Tile & Flue Lining Inc → Orrville Tile & Flue Lining Incorporated; 1984-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bowling Mark G → Orrville Tile & Flue Lining Incorporated; 1984-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bowling Mark G → Orrville Tile & Flue Lining Inc; 1984-08-15 to current/open; source msha-controller-operator-history