Your mixing trucks, silos and central mixers are key investments for your company, and should be treated as such. Lopez Concrete Chipping takes pride in providing expert — and ongoing — equipment and safety training to every member of our team. Trust Lopez Concrete Chipping to remove hardened concrete safely from your cement drums. Don't let your central mixer become the central problem for slowing down a job. Keep humidity-hardened cement from blocking your silo passageway.