# Relationship history for MSHA mine 4104447

Current hierarchy: **Ray D  Clayton → RJC Aggregate Inc → RJC Aggregate Inc**

- 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:** Clayton Aggregate, Inc. → RJC Aggregate Inc; 2003-11-06 to 2004-02-29; source msha-controller-operator-history
- **controller_controls_mine:** Ray D  Clayton  et al → RJC Aggregate Inc; 2003-11-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ray D  Clayton  et al → Clayton Aggregate, Inc.; 2003-11-06 to 2004-02-29; source msha-controller-operator-history
- **operator_operates_mine:** Clayton Aggregate Inc → RJC Aggregate Inc; 2004-03-01 to 2010-09-06; source msha-controller-operator-history
- **controller_controls_mine:** Frank M  Gray  et al → RJC Aggregate Inc; 2004-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Frank M  Gray  et al → Clayton Aggregate Inc; 2004-03-01 to 2010-09-06; source msha-controller-operator-history
- **controller_controls_operator:** David M  Smith  et al → Clayton Aggregate Inc; 2004-03-01 to 2010-09-06; source msha-controller-operator-history
- **operator_operates_mine:** RJC Aggregate Inc → RJC Aggregate Inc; 2010-09-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ray D  Clayton  et al → RJC Aggregate Inc; 2010-09-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ray D  Clayton  et al → RJC Aggregate Inc; 2010-09-07 to current/open; source msha-controller-operator-history