- Sierra International Machinery is a designer and worldwide distributor of scrap metal processing systems that fill a wide variety of scrap metal applications, from the largest shear/balers to portable baler/loggers. This equipment is used in Sierra's own scrap operations. Shear / Baler / Loggers Baler / Loggers Portable Baler / Loggers High Production / Cost Ratio Extensive Service / Parts ...sierraintl.com