# Relationship history for MSHA mine 4104979

Current hierarchy: **Jose J  Espinoza; Jaime  Torres → J & J Stone Company Inc. → J & J Stone Company 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Jaime  Torres et al → J & J Stone Company Inc.; 2000-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** J & J Stone Company Inc. → J & J Stone Company Inc.; 2012-12-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jaime  Torres et al → J & J Stone Company Inc.; 2012-12-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jose J  Espinoza et al → J & J Stone Company Inc.; 2012-12-04 to current/open; source msha-controller-operator-history