# Relationship history for MSHA mine 3300528

Current hierarchy: **Robert  Belden → The Belden Brick Company → Sugarcreek Operations**

- 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:** The Belden Brick Company → Sugarcreek Operations; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** William H  Belden → Sugarcreek Operations; 1950-01-01 to 2015-12-31; source msha-controller-operator-history
- **controller_controls_operator:** William H  Belden → The Belden Brick Company; 1950-01-01 to 2015-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Robert  Belden → Sugarcreek Operations; 2016-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Belden → The Belden Brick Company; 2016-01-01 to current/open; source msha-controller-operator-history