Polyurethanes are a good example of a traditional organic polymer system that has useful structural and mechanical properties, but is limited by its low thermo-oxidative stability. Although many varieties of this polymer are widely used in aerospace applications and home construction, they are highly combustible.
Schools in ZIP Code 57701. ZIP Code 57701 is in the Rapid City Area School District 51-4. There are 20 different elementary schools and high schools with mailing addresses in ZIP code 57701. Download a List of High Schools
ZIP Class â The ZIP Classification Code describes the type of ZIP area a 5-digit ZIP Code serves. A 'P' indicates the. ZIP Code has PO Boxes only and a blank ZIP Class indicates both PO Box and street delivery. PBSA NO Secondary â The MTC street address is in a Postal facility that is a standalone address. (i.e. not in a high-. rise or sharing the primary number with other businesses).