# Relationship history for MSHA mine 1601606

Current hierarchy: **Guy A Modica JR → Louisiana Aggregate Materials 2019, LLC → L.A.M.I. #2**

- 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

- **operator_operates_mine:** Louisiana Aggregate Materials 2019,LLC → L.A.M.I. #2; 2021-10-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Guy A Modica JR → L.A.M.I. #2; 2021-10-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Guy A Modica JR → Louisiana Aggregate Materials 2019,LLC; 2021-10-20 to current/open; source msha-controller-operator-history