# Relationship history for MSHA mine 1302262

Current hierarchy: **Rasmussen Group Inc → Viking Aggregates, Inc. → Jefferson 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** John  Hamilton → Jefferson Sand; 1980-04-30 to 2014-09-29; source msha-controller-operator-history
- **controller_controls_mine:** Johnson Holding Company → Jefferson Sand; 1991-03-15 to 2024-04-18; source msha-controller-operator-history
- **operator_operates_mine:** Greene County Redi-Mix, Inc. → Jefferson Sand; 2002-07-22 to 2022-07-17; source msha-controller-operator-history
- **controller_controls_operator:** John  Hamilton → Greene County Redi-Mix, Inc.; 2002-07-22 to 2014-09-29; source msha-controller-operator-history
- **controller_controls_mine:** John R  Hamilton et al → Jefferson Sand; 2014-09-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John R  Hamilton et al → Greene County Redi-Mix, Inc.; 2014-09-30 to 2022-07-17; source msha-controller-operator-history
- **controller_controls_operator:** Robert J  Hamilton et al → Greene County Redi-Mix, Inc.; 2014-09-30 to 2022-07-17; source msha-controller-operator-history
- **operator_operates_mine:** Central IA Ready Mix Inc dba Grn Co Mtls → Jefferson Sand; 2022-07-18 to 2025-11-02; source msha-controller-operator-history
- **controller_controls_mine:** Tim  Mallicoat et al → Jefferson Sand; 2022-07-18 to 2024-01-04; source msha-controller-operator-history
- **controller_controls_operator:** Tim  Mallicoat et al → Central IA Ready Mix Inc dba Grn Co Mtls; 2022-07-18 to 2024-01-04; source msha-controller-operator-history
- **controller_controls_operator:** Jeff  Rasmussen et al → Central IA Ready Mix Inc dba Grn Co Mtls; 2022-07-18 to 2024-01-04; source msha-controller-operator-history
- **controller_controls_operator:** Troy  Kunz et al → Central IA Ready Mix Inc dba Grn Co Mtls; 2022-07-18 to 2024-01-04; source msha-controller-operator-history
- **controller_controls_mine:** Rasmussen Group Inc → Jefferson Sand; 2024-01-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rasmussen Group Inc → Central IA Ready Mix Inc dba Grn Co Mtls; 2024-01-05 to 2025-11-02; source msha-controller-operator-history
- **controller_controls_mine:** Rasmussen Group Inc → Jefferson Sand; 2024-04-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Viking Aggregates, Inc. → Jefferson Sand; 2025-11-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Johnson Holding Company → Viking Aggregates, Inc.; 2025-11-03 to 2024-04-18; source msha-controller-operator-history
- **controller_controls_operator:** Rasmussen Group Inc → Viking Aggregates, Inc.; 2025-11-03 to current/open; source msha-controller-operator-history