# Relationship history for MSHA mine 2103787

Current hierarchy: **John  Riley; Joe  Riley → Riley Bros. Construction → 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:** Riley Bros. Construction → Plant #1; 2012-10-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jim  Rentz → Plant #1; 2012-10-02 to 2016-07-06; source msha-controller-operator-history
- **controller_controls_operator:** Jim  Rentz → Riley Bros. Construction; 2012-10-02 to 2016-07-06; source msha-controller-operator-history
- **controller_controls_mine:** John  Riley et al → Plant #1; 2016-07-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Riley et al → Riley Bros. Construction; 2016-07-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joe  Riley et al → Riley Bros. Construction; 2016-07-07 to current/open; source msha-controller-operator-history