(a) The Secretary may collect samples of agricultural liming materials and gypsum to have them analyzed.
(b) The Secretary has full access, ingress, and egress to and from any place of business, any quarry, kiln, factory, barn, building, land, or vessel used for manufacturing, storing, transporting, or selling agricultural liming materials or gypsum. The Secretary may open any container or package containing or supposed to contain agricultural liming material or gypsum and take any sample for analysis.