# Relationship history for MSHA mine 3700093

Current hierarchy: **Paul Philip  Baillargeon; Carmine  Iacuone → HOLLISTON SAND COMPANY INC → SLATERSVILLE PLANT**

- 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:** Holliston Sand Company Inc → SLATERSVILLE PLANT; 1950-01-01 to 1988-04-27; source msha-controller-operator-history
- **controller_controls_mine:** Phyllis  Dorr → SLATERSVILLE PLANT; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Phyllis  Dorr → Holliston Sand Company Inc; 1950-01-01 to 1988-04-27; source msha-controller-operator-history
- **operator_operates_mine:** Holliston Sand Company Inc → SLATERSVILLE PLANT; 1988-04-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Nicholas  Hill → SLATERSVILLE PLANT; 1988-04-28 to 2007-02-21; source msha-controller-operator-history
- **controller_controls_operator:** Nicholas  Hill → Holliston Sand Company Inc; 1988-04-28 to 2007-02-21; source msha-controller-operator-history
- **controller_controls_mine:** Robert W  Kimball → SLATERSVILLE PLANT; 2007-02-22 to 2017-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Robert W  Kimball → Holliston Sand Company Inc; 2007-02-22 to 2017-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Paul Philip  Baillargeon et al → SLATERSVILLE PLANT; 2017-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Paul Philip  Baillargeon et al → Holliston Sand Company Inc; 2017-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carmine  Iacuone et al → Holliston Sand Company Inc; 2017-04-01 to current/open; source msha-controller-operator-history