# Relationship history for MSHA mine 0801160

Current hierarchy: **PBA Holdings Inc → Palm Beach Aggregates LLC → Palm Beach Aggregates LLC**

- 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:** Southern Sand & Stone → Palm Beach Aggregates LLC; 1991-05-01 to 1991-11-26; source msha-controller-operator-history
- **controller_controls_mine:** Jane  Mahoney → Palm Beach Aggregates LLC; 1991-05-01 to 1991-11-26; source msha-controller-operator-history
- **controller_controls_operator:** Jane  Mahoney → Southern Sand & Stone; 1991-05-01 to 1991-11-26; source msha-controller-operator-history
- **operator_operates_mine:** Belvedere Construction Company → Palm Beach Aggregates LLC; 1991-11-27 to 1992-11-18; source msha-controller-operator-history
- **controller_controls_mine:** James G  Moody → Palm Beach Aggregates LLC; 1991-11-27 to 1992-11-18; source msha-controller-operator-history
- **controller_controls_operator:** James G  Moody → Belvedere Construction Company; 1991-11-27 to 1992-11-18; source msha-controller-operator-history
- **operator_operates_mine:** Quarry Of West Palm Beach Inc → Palm Beach Aggregates LLC; 1992-11-19 to 1993-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Robert C  Cook → Palm Beach Aggregates LLC; 1992-11-19 to 1993-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Robert C  Cook → Quarry Of West Palm Beach Inc; 1992-11-19 to 1993-08-31; source msha-controller-operator-history
- **operator_operates_mine:** Palm Beach Aggregate Inc → Palm Beach Aggregates LLC; 1993-09-01 to 2009-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Michael  Klein et al → Palm Beach Aggregates LLC; 1993-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Klein et al → Palm Beach Aggregate Inc; 1993-09-01 to 2009-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Palm Beach Aggregates LLC → Palm Beach Aggregates LLC; 2009-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Michael  Klein et al → Palm Beach Aggregates LLC; 2009-08-01 to 2021-03-01; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Klein et al → Palm Beach Aggregates LLC; 2009-08-01 to 2021-03-01; source msha-controller-operator-history
- **controller_controls_mine:** PBA Holdings Inc et al → Palm Beach Aggregates LLC; 2021-03-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** PBA Holdings Inc et al → Palm Beach Aggregates LLC; 2021-03-02 to current/open; source msha-controller-operator-history