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).
Urban Slums. Massive Urban Slums in Developing Countries. A view of the Rocinha favela, the largest favela in Brazil, with an estimated 60,000 to 150,000 people December 5, 2009 in Rio de Janeiro, Brazil. It is estimated that there are over 1,000 favelas in Rio where violent crime is rampant.assive Urban Slums in Developing Countries. A view of the Rocinha favela, the largest favela in Brazil, with an estimated 60,000 to 150,000 people December 5, 2009 in Rio de Janeiro, Brazil.