# Relationship history for MSHA mine 2002991

Current hierarchy: **Pasquale  Acciavatti → Pamar Enterprises Inc → Pamar Processing**

- 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:** Lapeer Sand & Gravel → Pamar Processing; 1996-11-01 to 2004-05-23; source msha-controller-operator-history
- **controller_controls_mine:** Denis S  Furgal → Pamar Processing; 1996-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Denis S  Furgal → Lapeer Sand & Gravel; 1996-11-01 to 2004-05-23; source msha-controller-operator-history
- **operator_operates_mine:** D S Marketing LLC → Pamar Processing; 2004-05-24 to 2007-06-18; source msha-controller-operator-history
- **controller_controls_mine:** Salvatore  D'Anna  et al → Pamar Processing; 2004-05-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Salvatore  D'Anna  et al → D S Marketing LLC; 2004-05-24 to 2007-06-18; source msha-controller-operator-history
- **controller_controls_operator:** Scolastica  Giacona  et al → D S Marketing LLC; 2004-05-24 to 2007-06-18; source msha-controller-operator-history
- **operator_operates_mine:** Pamar Enterprises Inc → Pamar Processing; 2007-06-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Pasquale  Acciavatti → Pamar Processing; 2007-06-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pasquale  Acciavatti → Pamar Enterprises Inc; 2007-06-19 to current/open; source msha-controller-operator-history