# Relationship history for MSHA mine 1506863

Current hierarchy: **Houchens Industries, Inc → SCOTTY'S CONTRACTING & STONE, LLC → BARREN COUNTY STONE**

- 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:** Summit Materials LLC → BARREN COUNTY STONE; 1950-01-01 to 2022-05-13; source msha-controller-operator-history
- **operator_operates_mine:** Mc Murtrey Stone Company Inc → BARREN COUNTY STONE; 1950-01-01 to 1988-11-20; source msha-controller-operator-history
- **controller_controls_mine:** Mc Murtrey Stone Company Inc → BARREN COUNTY STONE; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mc Murtrey Stone Company Inc → Mc Murtrey Stone Company Inc; 1950-01-01 to 1988-11-20; source msha-controller-operator-history
- **operator_operates_mine:** Scotty'S Contracting & Stone Company → BARREN COUNTY STONE; 1988-11-21 to 1999-12-31; source msha-controller-operator-history
- **controller_controls_mine:** James D  Scott → BARREN COUNTY STONE; 1988-11-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James D  Scott → Scotty'S Contracting & Stone Company; 1988-11-21 to 1999-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Scotty's Contracting & Stone LLC → BARREN COUNTY STONE; 2000-01-01 to 2010-09-12; source msha-controller-operator-history
- **controller_controls_mine:** Robert K  Reynolds et al → BARREN COUNTY STONE; 2000-01-01 to 2020-07-09; source msha-controller-operator-history
- **controller_controls_operator:** Robert K  Reynolds et al → Scotty's Contracting & Stone LLC; 2000-01-01 to 2010-09-12; source msha-controller-operator-history
- **controller_controls_mine:** Summit Materials LLC → BARREN COUNTY STONE; 2008-06-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Glass Aggregates → BARREN COUNTY STONE; 2010-09-13 to 2021-01-07; source msha-controller-operator-history
- **controller_controls_operator:** Summit Materials LLC → Glass Aggregates; 2010-09-13 to 2021-01-07; source msha-controller-operator-history
- **controller_controls_mine:** Houchens Industries, Inc → BARREN COUNTY STONE; 2020-07-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Houchens Industries, Inc → Scotty's Contracting & Stone LLC; 2020-07-10 to 2010-09-12; source msha-controller-operator-history
- **operator_operates_mine:** Hinkle Contracting Company LLC → BARREN COUNTY STONE; 2021-01-08 to 2021-02-04; source msha-controller-operator-history
- **controller_controls_operator:** Summit Materials LLC → Hinkle Contracting Company LLC; 2021-01-08 to 2021-02-04; source msha-controller-operator-history
- **operator_operates_mine:** Scotty's Contracting & Stone, LLC → BARREN COUNTY STONE; 2021-02-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Houchens Industries, Inc → Scotty's Contracting & Stone, LLC; 2021-02-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert K  Reynolds et al → Scotty's Contracting & Stone, LLC; 2021-02-05 to 2020-07-09; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → BARREN COUNTY STONE; 2022-05-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Hinkle Contracting Company LLC; 2022-05-14 to 2021-02-04; source msha-controller-operator-history