MSI's product line includes an extensive offering of Granite , Quartz , Porcelain , Luxury Vinyl flooring , Slate , Marble , Travertine , Sandstone , Limestone , Quartzite , onyx , stacked stone and pavers imported from over 36 countries on six continents. Summary: The Operations Supervisor manages daily warehouse operations for the Non-Slab division, leading and assigning work to ensure accurate and timely pick-pack orders, material put aways, daytime replenishments, and outbound shipments.