# Relationship history for MSHA mine 1601306

Current hierarchy: **Jay E Luhr → Luhr Brothers, Inc. → Construction Aggregate Supply**

- 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:** LUHR BROS., INC. → Construction Aggregate Supply; 1996-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jay E  Luhr et al → Construction Aggregate Supply; 1996-07-01 to 2015-05-23; source msha-controller-operator-history
- **controller_controls_operator:** Jay E  Luhr et al → LUHR BROS., INC.; 1996-07-01 to 2015-05-23; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Luhr et al → LUHR BROS., INC.; 1996-07-01 to 2015-05-23; source msha-controller-operator-history
- **controller_controls_mine:** Jay E Luhr → Construction Aggregate Supply; 2015-05-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jay E Luhr → LUHR BROS., INC.; 2015-05-24 to current/open; source msha-controller-operator-history