Breadcrumb Ag Home Directory Crystal Armstrong Staff Image Title Crystal Armstrong Position Extension Agent, Agriculture and Natural Resources Extension Leadership Team Part time Email crystal.armstrong@ndsu.edu Offices Rolette County Mailing address: Courthouse, PO Box 430 Rolla, ND 58367-0430 Physical address: 102 2nd St NE Rolla, ND 58367 Phone 701-477-5671 Office hours: 8:30 a.m.-4:30 p.m. ID Education N.S in Animal Science/Pre-Veterinary Medicine M.S in Microbiology/Food Safety Courses Taught Anatomy and Physiology I and II General Biology I and II Microbiology Concepts of Biology Livestock Evaluation