# Relationship history for MSHA mine 4001292

Current hierarchy: **Alan  Dement → Delta Contracting Company, LLC → SOUTH FORK PIT**

- 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:** Tennessee Asphalt Company → SOUTH FORK PIT; 1950-01-01 to 2008-05-20; source msha-controller-operator-history
- **controller_controls_mine:** W T  Ratliff Jr  et al → SOUTH FORK PIT; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** W T  Ratliff Jr  et al → Tennessee Asphalt Company; 1950-01-01 to 2008-05-20; source msha-controller-operator-history
- **controller_controls_operator:** Donna R  Mc Allister  et al → Tennessee Asphalt Company; 1950-01-01 to 2008-05-20; source msha-controller-operator-history
- **controller_controls_mine:** James W  Hayes et al → SOUTH FORK PIT; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** W G  Dement Jr → SOUTH FORK PIT; 2007-04-01 to 2018-08-31; source msha-controller-operator-history
- **operator_operates_mine:** J. R. Hayes Construction Co., Inc → SOUTH FORK PIT; 2008-05-21 to 2022-08-25; source msha-controller-operator-history
- **controller_controls_operator:** James W  Hayes et al → J. R. Hayes Construction Co., Inc; 2008-05-21 to 2022-08-25; source msha-controller-operator-history
- **controller_controls_mine:** Alan  Dement → SOUTH FORK PIT; 2018-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Delta Contracting Company, LLC → SOUTH FORK PIT; 2022-08-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** W G  Dement Jr → Delta Contracting Company, LLC; 2022-08-26 to 2018-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Alan  Dement → Delta Contracting Company, LLC; 2022-08-26 to current/open; source msha-controller-operator-history