It has large banana and papaya farms in its Lapa and Aguirre barrios. The Río Jueyes barrio is one of the main producers of beef in the south, counting with La Hacienda Las Carolinas which supplies Ganaderia Santiago, a slaughter house, with meat. Salinas also is headquarters for Canto Alegre, a company which specializes in poultry. This company supplies most of Puerto Rico's supermarkets with fresh poultry. The Aguirre Sugar Cane Mill was the last operational sugar cane mill in Puerto Rico, and closed its doors in 1993. The Central Aguirre Historic District is listed on the National Register of Historic places but there are no current plans to renovate the area, and is now mostly in ruins. Some other industries in Salinas include electrical and electronic machinery, plastics, sunglasses. There are 17 beaches in Salinas. Some of Salina's main attractions are:   The United States took control of Puerto Rico from Spain in the aftermath of the Spanish-American War under the terms of the Treaty of Paris of 1898 and conducted its first census of Puerto Rico, finding that the population of Salinas was 5,731. All municipalities in Puerto Rico are administered by a mayor, elected every four years. Karilyn Bonilla Colón (of the Popular Democratic Party) was elected as mayor at the 2012 general election, succeeding Carlos Rodríguez Mateo. The city belongs to the Puerto Rico Senatorial district VI, which is represented by two Senators. In 2012, Miguel Pereira Castillo and Angel M. Rodríguez were elected as District Senators. There are 41 bridges in Salinas. On a green rectangular field, five white isosceles triangles equal in size, placed in the center of the flag and forming a row that covers the extent of the background. The green represents the land and the triangles hills of salt from which the name of the town is derived. The shield uses the traditional colors of the town; green and silver. The salt knolls indicate in graphical form the name of the town: Salinas. The fish refer to the fishing. The sugar cane leaves that surround the shield, symbolize the sugar cane plantations.