# Relationship history for MSHA mine 2402431

Current hierarchy: **Rod A  Cranford → Rod Cranford Inc. → Black Hat Quarry**

- 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:** Anthony R Chapman → Black Hat Quarry; 2005-10-15 to 2015-04-06; source msha-controller-operator-history
- **controller_controls_mine:** Anthony R  Chapman → Black Hat Quarry; 2005-10-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Anthony R  Chapman → Anthony R Chapman; 2005-10-15 to 2015-04-06; source msha-controller-operator-history
- **controller_controls_mine:** Rod A  Cranford → Black Hat Quarry; 2006-12-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Rod Cranford Inc. → Black Hat Quarry; 2015-04-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rod A  Cranford → Rod Cranford Inc.; 2015-04-07 to current/open; source msha-controller-operator-history