# Relationship history for MSHA mine 4105433

Current hierarchy: **Eric  Shults → Kerrville Sand & Gravel → Kerrville**

- 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:** Adam  Jenschke → Kerrville; 2018-02-22 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** West Texas Aggregate,LLC → Kerrville; 2019-08-01 to 2021-09-29; source msha-controller-operator-history
- **controller_controls_operator:** Adam  Jenschke → West Texas Aggregate,LLC; 2019-08-01 to 2021-09-29; source msha-controller-operator-history
- **operator_operates_mine:** Kerrville Sand & Gravel → Kerrville; 2021-09-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Eric  Shults → Kerrville; 2021-09-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eric  Shults → Kerrville Sand & Gravel; 2021-09-30 to current/open; source msha-controller-operator-history