# Relationship history for MSHA mine 3002306

Current hierarchy: **Emil J  Galasso → COBLESKILL STONE PRODUCTS, INC. → HOWES CAVE**

- 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

- **controller_controls_mine:** Penn-Dixie Industries Inc → HOWES CAVE; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Callanan Industries Inc → HOWES CAVE; 1978-03-09 to 1982-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Penn-Dixie Industries Inc → Callanan Industries Inc; 1978-03-09 to 1982-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Callanan Industries Inc → HOWES CAVE; 1982-08-01 to 2002-06-30; source msha-controller-operator-history
- **controller_controls_mine:** M & S Resources Inc → HOWES CAVE; 1982-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** M & S Resources Inc → Callanan Industries Inc; 1982-08-01 to 2002-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Emil J  Galasso et al → HOWES CAVE; 2001-11-23 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cobleskill Stone Products, Inc. → HOWES CAVE; 2002-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Emil J  Galasso et al → Cobleskill Stone Products, Inc.; 2002-07-01 to current/open; source msha-controller-operator-history