# Relationship history for MSHA mine 4103532

Current hierarchy: **Richard C Carr → Dickie Carr Sand & Gravel Inc. → Carr Sand Pit Properties 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Dickie Carr Sand & Gravel Inc. → Carr Sand Pit Properties LLC; 1988-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dickie  Carr → Carr Sand Pit Properties LLC; 1988-07-01 to 2015-04-06; source msha-controller-operator-history
- **controller_controls_operator:** Dickie  Carr → Dickie Carr Sand & Gravel Inc.; 1988-07-01 to 2015-04-06; source msha-controller-operator-history
- **controller_controls_mine:** Richard C Carr → Carr Sand Pit Properties LLC; 2015-04-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard C Carr → Dickie Carr Sand & Gravel Inc.; 2015-04-07 to current/open; source msha-controller-operator-history