A human rights group has criticized Peru's government for granting Spanish oil giant Repsol...initial approval to build 279 miles (450 km) of seismic lines and 152 heliports in a portion of the Amazon basin believed to be inhabited by tribes that shun contact with outsiders..."The presence of this company puts these groups at an enormous risk," said David Hill, of...Survival International...The project, located in an area known as Lot 39, was granted initial approval...It is now being reviewed by the mining ministry for final approval. Repsol officials did not return several calls seeking comment.