# Relationship history for MSHA mine 4104348

Current hierarchy: **Joseph H  Anderson → Anderson Columbia Co., Inc. → Anderson Columbia Co., Inc./ Perez Pit**

- 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:** Joseph H  Anderson et al → Anderson Columbia Co., Inc./ Perez Pit; 1997-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Brothers Materials LTD → Anderson Columbia Co., Inc./ Perez Pit; 2002-05-29 to 2015-02-23; source msha-controller-operator-history
- **controller_controls_mine:** Rogelio  Soliz Jr et al → Anderson Columbia Co., Inc./ Perez Pit; 2002-05-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rogelio  Soliz Jr et al → Brothers Materials LTD; 2002-05-29 to 2015-02-23; source msha-controller-operator-history
- **operator_operates_mine:** Anderson Columbia Co., Inc. → Anderson Columbia Co., Inc./ Perez Pit; 2015-02-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joseph H  Anderson et al → Anderson Columbia Co., Inc.; 2015-02-24 to current/open; source msha-controller-operator-history