# Relationship history for MSHA mine 3002598

Current hierarchy: **William  Fuller → Fuller Sand & Gravel LLC → FULLER SAND & GRAVEL, 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Dick Du Bois → FULLER SAND & GRAVEL, LLC.; 1981-04-01 to 1996-05-22; source msha-controller-operator-history
- **controller_controls_mine:** Dick  Du Bois → FULLER SAND & GRAVEL, LLC.; 1981-04-01 to 1996-05-22; source msha-controller-operator-history
- **controller_controls_operator:** Dick  Du Bois → Dick Du Bois; 1981-04-01 to 1996-05-22; source msha-controller-operator-history
- **operator_operates_mine:** Du Bois Sand & Gravel → FULLER SAND & GRAVEL, LLC.; 1996-05-23 to 1998-05-03; source msha-controller-operator-history
- **controller_controls_mine:** Shirley  Du Bois → FULLER SAND & GRAVEL, LLC.; 1996-05-23 to 1998-05-03; source msha-controller-operator-history
- **controller_controls_operator:** Shirley  Du Bois → Du Bois Sand & Gravel; 1996-05-23 to 1998-05-03; source msha-controller-operator-history
- **operator_operates_mine:** Fuller Sand & Gravel LLC → FULLER SAND & GRAVEL, LLC.; 1998-05-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** William  Fuller → FULLER SAND & GRAVEL, LLC.; 1998-05-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William  Fuller → Fuller Sand & Gravel LLC; 1998-05-04 to current/open; source msha-controller-operator-history