# Relationship history for MSHA mine 4103779

Current hierarchy: **Jack  Carroll → Carroll Stone & Rock, Inc. → CARROLL'S ROCK PITS**

- 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:** Carroll'S Stone & Rock → CARROLL'S ROCK PITS; 1993-06-01 to 2011-07-05; source msha-controller-operator-history
- **controller_controls_mine:** Pete  Carroll → CARROLL'S ROCK PITS; 1993-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pete  Carroll → Carroll'S Stone & Rock; 1993-06-01 to 2011-07-05; source msha-controller-operator-history
- **controller_controls_mine:** Jack  Carroll → CARROLL'S ROCK PITS; 2007-12-06 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Carroll Stone & Rock, Inc. → CARROLL'S ROCK PITS; 2011-07-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jack  Carroll → Carroll Stone & Rock, Inc.; 2011-07-06 to current/open; source msha-controller-operator-history