# Relationship history for MSHA mine 4300430

Current hierarchy: **Donald R  Bayer; Beverly M  Bayer → Frye Quarry of Danville LLC → Frye Quarry of Danville 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: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **controller_controls_mine:** Frank  Whitcomb → Frye Quarry of Danville LLC; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Frank W Whitcomb Construction Corp → Frye Quarry of Danville LLC; 1989-06-01 to 1993-08-18; source msha-controller-operator-history
- **controller_controls_operator:** Frank  Whitcomb → Frank W Whitcomb Construction Corp; 1989-06-01 to 1993-08-18; source msha-controller-operator-history
- **operator_operates_mine:** Frye Quarry → Frye Quarry of Danville LLC; 1993-08-19 to 2007-06-25; source msha-controller-operator-history
- **controller_controls_mine:** Berton  Frye → Frye Quarry of Danville LLC; 1993-08-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Berton  Frye → Frye Quarry; 1993-08-19 to 2007-06-25; source msha-controller-operator-history
- **operator_operates_mine:** Frye Quarry of Danville LLC → Frye Quarry of Danville LLC; 2007-06-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Beverly M  Bayer  et al → Frye Quarry of Danville LLC; 2007-06-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Beverly M  Bayer  et al → Frye Quarry of Danville LLC; 2007-06-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donald R  Bayer  et al → Frye Quarry of Danville LLC; 2007-06-26 to current/open; source msha-controller-operator-history