As with most jobs, salaries vary by location and experience. The  average salary in the US for pipeline welders in 2014 is $64,778;  the average (for the same time period) i â¦ n San Francisco is $74,857.  [source link attached]. + 2 others found this useful.he  average salary in the US for pipeline welders in 2014 is $64,778;  the average (for the same time period) i â¦ n San Francisco is $74,857.
Certainly more than 30 percent of Limaâs population lives in slums; two slums alone contain more than 3 million people, San Juan and Cono Sur (Davis, Planet of Slums).
And of course the port of Callao, until today always an independent city, was developed to serve as Lima's and Peru's gateway to the world. While you had one year after Lima's foundation in 1536 a population of around 250 inhabitants, the population grew until 1614 to 26,400, until 1791 to 56,600. One year before Peru's independence in 1820 the city had 64,000 citizens. In 1861 Lima's population reached for the first time the 100,000 mark.