The above conditions are sufficient, but not necessary. Causes can be distinguished as necessary, sufficient or probabilistic conditions. This requires a secure gas supply of sufficient capacity. Moreover, the social actions may not sufficient. Ingestion of sufficient amounts is fatal if untreated. A UL has not been set due to the lack of sufficient data. Successful agriculture is dependent upon farmers having sufficient access to water. Precautions, including sufficient ventilation, are required. Sun drying requires little more than racks and sufficient sunlight. Any form of muscle damage of sufficient severity can cause rhabdomyolysis. Ed Boon explained this was due to a lack of sufficient memory. Resting the voice and sufficient fluids may help. They achieve criticality by having a sufficient volume of salt with sufficient fissile material. Artillery pieces are made by various techniques providing reliably sufficient strength. Corium of sufficient temperature can melt concrete.