# Relationship history for MSHA mine 0600020

Current hierarchy: **Peter K  Tully → GALASSO MATERIALS LLC → GALASSO MATERIALS 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:** Roncari Industries Inc → GALASSO MATERIALS LLC; 1950-01-01 to 1995-07-07; source msha-controller-operator-history
- **controller_controls_mine:** Raymond A  Roncari → GALASSO MATERIALS LLC; 1950-01-01 to 1995-07-07; source msha-controller-operator-history
- **controller_controls_operator:** Raymond A  Roncari → Roncari Industries Inc; 1950-01-01 to 1995-07-07; source msha-controller-operator-history
- **controller_controls_mine:** BTR PLC → GALASSO MATERIALS LLC; 1995-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tilcon Roncari Inc → GALASSO MATERIALS LLC; 1995-07-08 to 1997-03-05; source msha-controller-operator-history
- **controller_controls_operator:** BTR PLC → Tilcon Roncari Inc; 1995-07-08 to 1997-03-05; source msha-controller-operator-history
- **operator_operates_mine:** Galasso Materials LLC → GALASSO MATERIALS LLC; 1997-03-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Emil J  Galasso et al → GALASSO MATERIALS LLC; 1997-03-06 to 2016-02-02; source msha-controller-operator-history
- **controller_controls_operator:** Emil J  Galasso et al → Galasso Materials LLC; 1997-03-06 to 2016-02-02; source msha-controller-operator-history
- **controller_controls_mine:** Peter K  Tully → GALASSO MATERIALS LLC; 2016-02-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peter K  Tully → Galasso Materials LLC; 2016-02-03 to current/open; source msha-controller-operator-history