CRH - Builders Supply - Ready Mix [Field Technician / Maintenance Technician] As a Plant Mechanic at CRH, you'll: Repair and maintain construction equipment and mechanical equipment; Troubleshoot problems, making economical and durable repairs; Dismantle equipment to gain access to and remove defective parts using hoists and hand tools; Troubleshoot and repair electrical and hydraulic systems, diesel and gasoline engines, etc...Hiring Immediately >>