# Relationship history for MSHA mine 3402234

Current hierarchy: **Melinda S  Kemp; James A  Kemp → River Valley Materials LLC → Braden**

- 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:** James A  Kemp et al → Braden; 2019-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** River Valley Materials LLC → Braden; 2023-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James A  Kemp et al → River Valley Materials LLC; 2023-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Melinda S  Kemp et al → River Valley Materials LLC; 2023-07-01 to current/open; source msha-controller-operator-history