# Relationship history for MSHA mine 3610193

Current hierarchy: **Raymond J  Malak → Raymond J. Malak → Noxen Sand and Materials**

- 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:** Ray Malak → Noxen Sand and Materials; 2016-08-31 to 2019-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Ray  Malak → Noxen Sand and Materials; 2016-08-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ray  Malak → Ray Malak; 2016-08-31 to 2019-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Raymond J. Malak → Noxen Sand and Materials; 2020-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Raymond J  Malak → Noxen Sand and Materials; 2020-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Raymond J  Malak → Raymond J. Malak; 2020-01-01 to current/open; source msha-controller-operator-history