Like the nuclear industry, research labs that work with radioactive materials frequently depend on lead products and services for containment of radioactive materials and proper shielding. Radioactive isotope containers are one possible solution, as they come ready to receive and contain such materials. Alternately, it may be necessary to apply lead lining to cabinets, compartments, tanks, or surfaces that lack sufficient protection. Other customizable forms of shielding include lead, cadmium, and tin sheets, or lead castles which are modifiable based on containment needs. For the maximum x-ray/gamma protection for medical research labs, lead blocks, cast lead, and extruded bricks offer the strongest shielding.