# Relationship history for MSHA mine 3610244

Current hierarchy: **Scott  Slater → Mobile Aggregate Recycling Services, Inc. → Keestrack Frontier Screen Plant (SP4)**

- 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:** Scott  Slater → Keestrack Frontier Screen Plant (SP4); 2011-04-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mobile Aggregate Recycling Services, Inc. → Keestrack Frontier Screen Plant (SP4); 2018-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Slater → Mobile Aggregate Recycling Services, Inc.; 2018-05-17 to current/open; source msha-controller-operator-history