# Relationship history for MSHA mine 4103425

Current hierarchy: **Chaney Carl → C & C Crushed Stone Inc → C & C Quarry**

- 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:** Chaney Carl → C & C Quarry; 1980-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** B & D Crushed Stone Inc → C & C Quarry; 1986-06-01 to 1988-02-16; source msha-controller-operator-history
- **controller_controls_mine:** Dallmeyer John & R T Broesche → C & C Quarry; 1986-06-01 to 1988-02-16; source msha-controller-operator-history
- **controller_controls_operator:** Dallmeyer John & R T Broesche → B & D Crushed Stone Inc; 1986-06-01 to 1988-02-16; source msha-controller-operator-history
- **operator_operates_mine:** C & C Crushed Stone Inc → C & C Quarry; 1988-02-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chaney Carl → C & C Crushed Stone Inc; 1988-02-17 to current/open; source msha-controller-operator-history