# Relationship history for MSHA mine 4406728

Current hierarchy: **Chaney Enterprises LP → Sustainable Land Use, LLC → Carson-VA Sand & Gravel**

- 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:** Robert Brett House → Carson-VA Sand & Gravel; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Chaney Enterprises LP → Carson-VA Sand & Gravel; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** R T Elder Sand & Gravel Inc → Carson-VA Sand & Gravel; 1993-01-01 to 1999-10-15; source msha-controller-operator-history
- **controller_controls_mine:** R T  Elder → Carson-VA Sand & Gravel; 1993-01-01 to 1999-10-15; source msha-controller-operator-history
- **controller_controls_operator:** R T  Elder → R T Elder Sand & Gravel Inc; 1993-01-01 to 1999-10-15; source msha-controller-operator-history
- **operator_operates_mine:** West Sand & Gravel Company Inc → Carson-VA Sand & Gravel; 1999-10-16 to 2002-07-14; source msha-controller-operator-history
- **controller_controls_operator:** Robert Brett House → West Sand & Gravel Company Inc; 1999-10-16 to 2002-07-14; source msha-controller-operator-history
- **operator_operates_mine:** Brett Aggregates, Inc. → Carson-VA Sand & Gravel; 2002-07-15 to 2011-01-09; source msha-controller-operator-history
- **controller_controls_mine:** Robert Brett House → Carson-VA Sand & Gravel; 2002-07-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert Brett House → Brett Aggregates, Inc.; 2002-07-15 to 2011-01-09; source msha-controller-operator-history
- **operator_operates_mine:** Dominion Aggregates → Carson-VA Sand & Gravel; 2011-01-10 to 2011-08-23; source msha-controller-operator-history
- **controller_controls_mine:** Dean  Ives → Carson-VA Sand & Gravel; 2011-01-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dean  Ives → Dominion Aggregates; 2011-01-10 to 2011-08-23; source msha-controller-operator-history
- **operator_operates_mine:** Stony Creek Sand and Gravel LLC → Carson-VA Sand & Gravel; 2011-08-24 to 2021-10-04; source msha-controller-operator-history
- **controller_controls_mine:** Michael A  Lamb → Carson-VA Sand & Gravel; 2011-08-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael A  Lamb → Stony Creek Sand and Gravel LLC; 2011-08-24 to 2021-10-04; source msha-controller-operator-history
- **operator_operates_mine:** Chaney Enterprises LTD Partnership → Carson-VA Sand & Gravel; 2021-10-05 to 2024-03-24; source msha-controller-operator-history
- **controller_controls_operator:** Chaney Enterprises LP → Chaney Enterprises LTD Partnership; 2021-10-05 to 2024-03-24; source msha-controller-operator-history
- **operator_operates_mine:** Sustainable Land Use, LLC → Carson-VA Sand & Gravel; 2024-03-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Chaney Enterprises LP → Carson-VA Sand & Gravel; 2024-03-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chaney Enterprises LP → Sustainable Land Use, LLC; 2024-03-25 to current/open; source msha-controller-operator-history