# Relationship history for MSHA mine 2301601

Current hierarchy: **Michael K Farmer; Elliott (Bud) E Farmer → Capital Quarries Company Inc → Patriot Portable Plant**

- 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

- **controller_controls_mine:** Eric S  Strope et al → Patriot Portable Plant; 1950-01-01 to 2011-04-18; source msha-controller-operator-history
- **operator_operates_mine:** Meramec Rock & Ag-Lime Company → Patriot Portable Plant; 1950-01-01 to 1991-07-23; source msha-controller-operator-history
- **controller_controls_mine:** David  Smith → Patriot Portable Plant; 1950-01-01 to 1991-07-23; source msha-controller-operator-history
- **controller_controls_operator:** David  Smith → Meramec Rock & Ag-Lime Company; 1950-01-01 to 1991-07-23; source msha-controller-operator-history
- **operator_operates_mine:** Smith Limestone Quarry → Patriot Portable Plant; 1991-07-24 to 1998-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Earl Dean  Smith → Patriot Portable Plant; 1991-07-24 to 1998-01-31; source msha-controller-operator-history
- **controller_controls_operator:** Earl Dean  Smith → Smith Limestone Quarry; 1991-07-24 to 1998-01-31; source msha-controller-operator-history
- **operator_operates_mine:** Capital Quarries Company Inc → Patriot Portable Plant; 1998-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eric S  Strope et al → Capital Quarries Company Inc; 1998-02-01 to 2011-04-18; source msha-controller-operator-history
- **controller_controls_mine:** Elliott (Bud) E Farmer  et al → Patriot Portable Plant; 2011-04-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Elliott (Bud) E Farmer  et al → Capital Quarries Company Inc; 2011-04-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael K Farmer  et al → Capital Quarries Company Inc; 2011-04-19 to current/open; source msha-controller-operator-history