# Relationship history for MSHA mine 3402179

Current hierarchy: **Bobby  Coyle; Jarrod  Coyle → 3C Stone Company, LLC → Barnes #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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Jarrod  Coyle et al → Barnes #1; 2016-06-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** 3C Stone Company, LLC → Barnes #1; 2018-06-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jarrod  Coyle et al → 3C Stone Company, LLC; 2018-06-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bobby  Coyle et al → 3C Stone Company, LLC; 2018-06-22 to current/open; source msha-controller-operator-history