# Relationship history for MSHA mine 1002275

Current hierarchy: **Kirk  Taylor; Jarred  Tracey; Cody  Taylor → High Output Construction → Sand 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:** Justin  Mettler → Sand Plant; 2011-06-23 to 2015-08-09; source msha-controller-operator-history
- **controller_controls_mine:** Kirk  Taylor → Sand Plant; 2015-08-10 to 2017-12-31; source msha-controller-operator-history
- **operator_operates_mine:** High Output Construction → Sand Plant; 2016-06-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Justin  Mettler → High Output Construction; 2016-06-03 to 2015-08-09; source msha-controller-operator-history
- **controller_controls_operator:** Kirk  Taylor → High Output Construction; 2016-06-03 to 2017-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Cody  Taylor et al → Sand Plant; 2018-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cody  Taylor et al → High Output Construction; 2018-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kirk  Taylor et al → High Output Construction; 2018-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jarred  Tracey et al → High Output Construction; 2018-01-01 to current/open; source msha-controller-operator-history