# Relationship history for MSHA mine 0901206

Current hierarchy: **Rogers Group Inc → Rogers Group Inc. → J.C. 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Rogers Group Inc → J.C. Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mike L  Watson et al → J.C. Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Brown & Watson Inc. → J.C. Plant; 2010-10-25 to 2024-04-15; source msha-controller-operator-history
- **controller_controls_operator:** Mike L  Watson et al → Brown & Watson Inc.; 2010-10-25 to 2024-04-15; source msha-controller-operator-history
- **operator_operates_mine:** Rogers Group Inc. → J.C. Plant; 2024-04-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rogers Group Inc → Rogers Group Inc.; 2024-04-16 to current/open; source msha-controller-operator-history