# Relationship history for MSHA mine 0801157

Current hierarchy: **Five Forks Investment LLC; East River Sand LLC → Ben Clark Sand, LLC → Ben Clark Sand**

- 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:** Clark Site Contractors, Inc → Ben Clark Sand; 1991-04-01 to 2004-11-08; source msha-controller-operator-history
- **controller_controls_mine:** Connie  Clark  et al → Ben Clark Sand; 1991-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Connie  Clark  et al → Clark Site Contractors, Inc; 1991-04-01 to 2004-11-08; source msha-controller-operator-history
- **controller_controls_operator:** John R  Clark  et al → Clark Site Contractors, Inc; 1991-04-01 to 2004-11-08; source msha-controller-operator-history
- **operator_operates_mine:** Ben Clark Sand, LLC → Ben Clark Sand; 2004-11-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** East River Sand LLC  et al → Ben Clark Sand; 2004-11-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** East River Sand LLC  et al → Ben Clark Sand, LLC; 2004-11-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Five Forks Investment LLC  et al → Ben Clark Sand, LLC; 2004-11-09 to current/open; source msha-controller-operator-history