# Relationship history for MSHA mine 3001545

Current hierarchy: **Carl J  Clemente → Century Aggregates Inc → DOVER PIT**

- 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:** Palumbo Sand & Gravel Co., Inc. → DOVER PIT; 1950-01-01 to 2026-04-20; source msha-controller-operator-history
- **controller_controls_mine:** Fortunato  Palumbo → DOVER PIT; 1950-01-01 to 2020-03-21; source msha-controller-operator-history
- **controller_controls_operator:** Fortunato  Palumbo → Palumbo Sand & Gravel Co., Inc.; 1950-01-01 to 2020-03-21; source msha-controller-operator-history
- **controller_controls_mine:** Carl J  Clemente  et al → DOVER PIT; 2005-08-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Anthony  Palumbo → DOVER PIT; 2020-03-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Anthony  Palumbo → Palumbo Sand & Gravel Co., Inc.; 2020-03-22 to 2026-04-20; source msha-controller-operator-history
- **operator_operates_mine:** Century Aggregates Inc → DOVER PIT; 2026-04-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carl J  Clemente  et al → Century Aggregates Inc; 2026-04-21 to current/open; source msha-controller-operator-history