# Relationship history for MSHA mine 2103995

Current hierarchy: **Perry  Hoven; Brent  Henning; Ryan  Henning → Henning Aggregate → Mobile Screen 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:** Gary  Henning et al → Mobile Screen Plant; 2001-05-01 to 2018-05-03; source msha-controller-operator-history
- **controller_controls_mine:** Perry  Hoven et al → Mobile Screen Plant; 2018-05-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Henning Aggregate → Mobile Screen Plant; 2021-05-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Perry  Hoven et al → Henning Aggregate; 2021-05-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brent  Henning et al → Henning Aggregate; 2021-05-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ryan  Henning et al → Henning Aggregate; 2021-05-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary  Henning et al → Henning Aggregate; 2021-05-03 to 2018-05-03; source msha-controller-operator-history
- **controller_controls_operator:** J Scot  Henning et al → Henning Aggregate; 2021-05-03 to 2018-05-03; source msha-controller-operator-history