# Relationship history for MSHA mine 1700676

Current hierarchy: **Cynthia M  Burton → K & C Construction Inc → K & C CON, INC.**

- 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:** K & C Construction Inc → K & C CON, INC.; 2000-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cynthia M  Burton → K & C CON, INC.; 2000-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cynthia M  Burton → K & C Construction Inc; 2000-08-01 to current/open; source msha-controller-operator-history