An independent research group [E-Tech International] and the company building one of Latin America' most ambitious gas pipelines are butting heads over claims that the company used shoddy materials and unqualified staff for [the Camisea gas] pipeline... [E-Tech’s] report predicted further leaks and said that the shoddy work by the builder, Transportadora de Gas del Perú (TGP), a consortium that includes...Pluspetrol and Techint,...Hunt Oil,...Sonatrach and...SK Corp, has led to the previous four ruptures in the pipeline. Green and watchdog groups said the findings validated their fears that such massive projects are often detrimental to the environment and indigenous people in remote areas... TGP has strongly denied the report's conclusions... [The] IDB [Inter-American Development Bank] says it has monitored the environmental and social impacts of the project, and cited a lack of evidence in the E-Tech report.