# Relationship history for MSHA mine 3304247

Current hierarchy: **Jeffrey J.  Stansley; Brent  Gerken → Genoa Limestone → Genoa Limestone Plant 1**

- 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:** Sylvester Material Company, Inc. → Genoa Limestone Plant 1; 1991-10-01 to 2006-03-13; source msha-controller-operator-history
- **controller_controls_mine:** Jeffery J  Stansley et al → Genoa Limestone Plant 1; 1991-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeffery J  Stansley et al → Sylvester Material Company, Inc.; 1991-10-01 to 2006-03-13; source msha-controller-operator-history
- **operator_operates_mine:** Stansley Mineral Resources Inc → Genoa Limestone Plant 1; 2006-03-14 to 2015-02-16; source msha-controller-operator-history
- **controller_controls_mine:** Jeffery J  Stansley et al → Genoa Limestone Plant 1; 2006-03-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeffery J  Stansley et al → Stansley Mineral Resources Inc; 2006-03-14 to 2015-02-16; source msha-controller-operator-history
- **operator_operates_mine:** Genoa Limestone, LLC → Genoa Limestone Plant 1; 2015-02-17 to 2023-05-29; source msha-controller-operator-history
- **controller_controls_mine:** Jeffery J Stansley → Genoa Limestone Plant 1; 2015-02-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeffery J Stansley → Genoa Limestone, LLC; 2015-02-17 to 2023-05-29; source msha-controller-operator-history
- **operator_operates_mine:** Genoa Limestone → Genoa Limestone Plant 1; 2023-05-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brent  Gerken → Genoa Limestone Plant 1; 2023-05-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brent  Gerken → Genoa Limestone; 2023-05-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeffrey J.  Stansley → Genoa Limestone; 2023-05-30 to current/open; source msha-controller-operator-history