should be noted that the aforementioned year, when the city's population was estimated at more than nine thousand inhabitants, the Subdelegation Pisagua was divided into three districts: Mar (1), corresponding to the urban sector and the north; Pichalo ( 2 �), the southern part of the city and the area of the peninsula of the same name, and, Jun�n (3rd), all the southern part of the delegation, including Caleta Jun�n.
Parallel to urban development, strengthened its position as Pisagua important port for the export of nitrate and iodine during high nitrate boom that took place in northern Chile until 1930. Saltpeter was facing the same animation and existing trade in the city.
Indeed, during the early years of the twentieth century, Pisagua was one of the busiest shipping ports nationwide. In fact, it raises Risopatr�n Francisco was one of the three main ports of Chile saltpeter, with Iquique and Antofagasta. They had set up their branches several major banks at the time and was one of the most beautiful cities in the arid northern coast of Chile, due to the construction of housing and urban buildings (like the train station, the theater and the market ) in Douglas-fir. It was also active in the import trade of luxury goods and foodstuffs for consumption of the nitrate, which explained the presence of branches of Chilean and foreign commercial houses, which at the time were known as "convenience" (now day distribution of imported products). In this plane, Risopatr�n Francisco said: " It offers all kinds of resources, both in goods and in consumer goods, vegetables, fruits, flowers, vapors admitted South and North, arriving twice a week . "
By 1890 there were over 4,000 people who, at least since 1889 and until 1917 - were provided with a tramway urban, 13 valued at $ 15,000 at the time and belonged to the Society of Pisagua FCU. 14 also existed some foreign honorary consulates, and few immigrants settled there Peruvian, Bolivian, Chilean,
