# Relationship history for MSHA mine 2003240

Current hierarchy: **Richard  Jackson → McConnell Sand & Stone LLC → Perry Lakes**

- 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:** Richard  Jackson → Perry Lakes; 1998-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** McConnell Sand & Gravel Inc → Perry Lakes; 2002-03-22 to 2009-08-24; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Jackson → McConnell Sand & Gravel Inc; 2002-03-22 to 2009-08-24; source msha-controller-operator-history
- **operator_operates_mine:** McConnell Sand & Stone LLC → Perry Lakes; 2009-08-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Richard  Jackson → Perry Lakes; 2009-08-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Jackson → McConnell Sand & Stone LLC; 2009-08-25 to current/open; source msha-controller-operator-history