Please answer a question about the following article about Marshall Islands:

In 1999, a private company built a tuna loining plant with more than 400 employees, mostly women. But the plant closed in 2005 after a failed attempt to convert it to produce tuna steaks, a process that requires half as many employees. Operating costs exceeded revenue, and the plant's owners tried to partner with the government to prevent closure. But government officials personally interested in an economic stake in the plant refused to help. After the plant closed, it was taken over by the government, which had been the guarantor of a $2 million loan to the business.[citation needed]

How many people worked at the tuna loining plant?
400