Sioux City-Terra Industries Inc. expects its idled Donaldsonville, La., plant to start up in August, with between 10 days to two weeks required to get the plant up to normal rates. As a result, the plant is expected to contribute to at least two of the three months in the third quarter. Terra hopes to operate the plant at 450-500,000 st/y annual capacity. The 400,000 st would replace purchased material – any above that would be extra. Terra says the aggregate cost of the startup will be approximately $10-$13 million, half of which will be catalyst costs.