# Relationship history for MSHA mine 4103670

Current hierarchy: **ATM Holdings LLC → Armadillo Materials LLC → HORSESHOE BEND SAND 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

- **controller_controls_mine:** Bill  Glass → HORSESHOE BEND SAND SUPPLY; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** H & B Contractors Inc → HORSESHOE BEND SAND SUPPLY; 1991-04-01 to 2018-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Bill  Glass → H & B Contractors Inc; 1991-04-01 to 2018-04-30; source msha-controller-operator-history
- **operator_operates_mine:** H&B Contractors → HORSESHOE BEND SAND SUPPLY; 2018-05-01 to 2023-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Jason D  Platt et al → HORSESHOE BEND SAND SUPPLY; 2018-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jason D  Platt et al → H&B Contractors; 2018-05-01 to 2023-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Allen C  Kasparian et al → H&B Contractors; 2018-05-01 to 2023-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Tex-Mix Partners Ltd → HORSESHOE BEND SAND SUPPLY; 2018-11-27 to 2021-12-31; source msha-controller-operator-history
- **controller_controls_mine:** ATM Holdings LLC → HORSESHOE BEND SAND SUPPLY; 2022-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Armadillo Materials LLC → HORSESHOE BEND SAND SUPPLY; 2024-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tex-Mix Partners Ltd → Armadillo Materials LLC; 2024-01-01 to 2021-12-31; source msha-controller-operator-history
- **controller_controls_operator:** ATM Holdings LLC → Armadillo Materials LLC; 2024-01-01 to current/open; source msha-controller-operator-history