# Relationship history for MSHA mine 3610431

Current hierarchy: **James J  Svonavec → J & J SVONAVEC EXCAVATING, INC. → COYOTE MOUNTAIN JOB**

- 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:** John J  Svonavec et al → COYOTE MOUNTAIN JOB; 2011-05-20 to 2023-09-30; source msha-controller-operator-history
- **operator_operates_mine:** J & J SVONAVEC EXCAVATING, INC. → COYOTE MOUNTAIN JOB; 2023-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John J  Svonavec et al → J & J SVONAVEC EXCAVATING, INC.; 2023-10-01 to 2023-09-30; source msha-controller-operator-history
- **controller_controls_operator:** James J  Svonavec et al → J & J SVONAVEC EXCAVATING, INC.; 2023-10-01 to 2023-09-30; source msha-controller-operator-history
- **controller_controls_mine:** James J  Svonavec → COYOTE MOUNTAIN JOB; 2023-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James J  Svonavec → J & J SVONAVEC EXCAVATING, INC.; 2023-10-01 to current/open; source msha-controller-operator-history