# Relationship history for MSHA mine 0302004

Current hierarchy: **Anthony  Atkinson → Anthony Atkinson Construction & Aggregates, LLC → HMB Quarry**

- 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:** Amelia Minerals LLC → HMB Quarry; 2011-01-01 to 2021-04-14; source msha-controller-operator-history
- **controller_controls_mine:** Randy  Duffield et al → HMB Quarry; 2011-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randy  Duffield et al → Amelia Minerals LLC; 2011-01-01 to 2021-04-14; source msha-controller-operator-history
- **controller_controls_operator:** Larry  Duffield et al → Amelia Minerals LLC; 2011-01-01 to 2021-04-14; source msha-controller-operator-history
- **operator_operates_mine:** Anthony Atkinson Construction & Aggregates, LLC → HMB Quarry; 2021-04-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Anthony  Atkinson → HMB Quarry; 2021-04-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Anthony  Atkinson → Anthony Atkinson Construction & Aggregates, LLC; 2021-04-15 to current/open; source msha-controller-operator-history