# Relationship history for MSHA mine 1202493

Current hierarchy: **Matthew  Thompson → Riverside Aggregates & Materials, Inc. → RIVERSIDE AGGREGATES & MATERIALS, 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

- **operator_operates_mine:** Riverside Aggregates & Materials, Inc. → RIVERSIDE AGGREGATES & MATERIALS, INC.; 2019-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jamie  Thompson → RIVERSIDE AGGREGATES & MATERIALS, INC.; 2019-01-01 to 2026-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Jamie  Thompson → Riverside Aggregates & Materials, Inc.; 2019-01-01 to 2026-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Matthew  Thompson → RIVERSIDE AGGREGATES & MATERIALS, INC.; 2026-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Matthew  Thompson → Riverside Aggregates & Materials, Inc.; 2026-07-01 to current/open; source msha-controller-operator-history