Metallurgists amp Mineral Processing Engineers. For its extensive practical experience, 911 Metallurgist has a clear understanding of what successful mineral processing engineering is and how to go about achieving it. Your goal is the production of a material that is marketable and returns you and your investors sustainable revenues. Jul 01, 2021 For Sale Price USD $155,000. Get Financing*. Serial Number 405799. Condition Used. 2006 Kolberg-Pioneer 4250CC impact plant. Serial 405799 Model 71-1D6012 Approximately 15,000 hours. Crusher comes with a brand new extra set of blow bars, has a new primary curtain, and a few other misc. spare parts.