# Relationship history for MSHA mine 3607948

Current hierarchy: **Brian E  Bennett; Ralph  Perry; Robert E  Wilkinson → Endless Mountain Stone and Development LLC → Fenton Farms Quarry**

- 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:** Fenton Farms → Fenton Farms Quarry; 1987-10-01 to 2007-10-10; source msha-controller-operator-history
- **controller_controls_mine:** Arthur  Fenton  et al → Fenton Farms Quarry; 1987-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arthur  Fenton  et al → Fenton Farms; 1987-10-01 to 2007-10-10; source msha-controller-operator-history
- **operator_operates_mine:** Arthur Fenton Farms → Fenton Farms Quarry; 2007-10-11 to 2010-05-03; source msha-controller-operator-history
- **controller_controls_mine:** Arthur  Fenton  et al → Fenton Farms Quarry; 2007-10-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arthur  Fenton  et al → Arthur Fenton Farms; 2007-10-11 to 2010-05-03; source msha-controller-operator-history
- **operator_operates_mine:** Endless Mountain Stone and Development LLC → Fenton Farms Quarry; 2010-05-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brian E  Bennett et al → Fenton Farms Quarry; 2010-05-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brian E  Bennett et al → Endless Mountain Stone and Development LLC; 2010-05-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ralph  Perry et al → Endless Mountain Stone and Development LLC; 2010-05-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert E  Wilkinson et al → Endless Mountain Stone and Development LLC; 2010-05-04 to current/open; source msha-controller-operator-history