Profile: J B L Co Inc. focuses on a comprehensive range of solutions for sampling, weighing and underground mining. We supply various types of sampling systems. Our QC-360 sampler is a quality control sampler, which is developed primarily for the aggregate industry. Our Clean Sweep sampling systems are used in coal mines, docks, ports and power plants, as well as sampling applications for green coke, calcined coke, stone & a variety of ores.