# Relationship history for MSHA mine 3401924

Current hierarchy: **Johnny W Morris; Everett B Morris → Morris Stone Company → Stigler #1**

- 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

- **operator_operates_mine:** Morris Stone Company → Stigler #1; 2004-01-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Johnny W Morris et al → Stigler #1; 2004-01-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Johnny W Morris et al → Morris Stone Company; 2004-01-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Everett B Morris et al → Morris Stone Company; 2004-01-08 to current/open; source msha-controller-operator-history