# Relationship history for MSHA mine 0203215

Current hierarchy: **Joy  Gillespie → Western Materials, LLC → Western Materials Site #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:** Western Materials, LLC → Western Materials Site #1; 2008-04-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Trent  Gillespie et al → Western Materials Site #1; 2008-04-23 to 2017-07-26; source msha-controller-operator-history
- **controller_controls_operator:** Trent  Gillespie et al → Western Materials, LLC; 2008-04-23 to 2017-07-26; source msha-controller-operator-history
- **controller_controls_operator:** Troy  Gillespie et al → Western Materials, LLC; 2008-04-23 to 2017-07-26; source msha-controller-operator-history
- **controller_controls_mine:** David  Buttrum et al → Western Materials Site #1; 2017-07-27 to 2019-09-26; source msha-controller-operator-history
- **controller_controls_operator:** David  Buttrum et al → Western Materials, LLC; 2017-07-27 to 2019-09-26; source msha-controller-operator-history
- **controller_controls_operator:** Joy  Gillespie et al → Western Materials, LLC; 2017-07-27 to 2019-09-26; source msha-controller-operator-history
- **controller_controls_mine:** Joy  Gillespie → Western Materials Site #1; 2019-09-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joy  Gillespie → Western Materials, LLC; 2019-09-27 to current/open; source msha-controller-operator-history