# Relationship history for MSHA mine 1202175

Current hierarchy: **Donald  Blankenberger → B B Mining Inc. → Pride 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Donald  Blankenberger → Pride Mine; 1991-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Indiana Farms Inc → Pride Mine; 1995-02-01 to 1995-10-03; source msha-controller-operator-history
- **controller_controls_mine:** William A  Brandt → Pride Mine; 1995-02-01 to 1995-10-03; source msha-controller-operator-history
- **controller_controls_operator:** William A  Brandt → Indiana Farms Inc; 1995-02-01 to 1995-10-03; source msha-controller-operator-history
- **operator_operates_mine:** B B Mining Inc. → Pride Mine; 1995-10-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donald  Blankenberger → B B Mining Inc.; 1995-10-04 to current/open; source msha-controller-operator-history