這項民主程序不僅受到皮烏拉省12個市政機關所組成的農業自治區的支持，同時也是秘魯法務部「國家人權議會」認定的合法程序。 由皮烏拉省安地斯7個地區的市政機關所組成的安地斯山脈中央社群（Andean Central Community），同樣無異議地支持基層的民主公投，皮烏拉省人民監察組織（People’s Ombudsman of Piura）也表示支持。
After a prolonged struggle by local inhabitants to preserve the integrity of the Piuran Andes against a mining takeover, on September 16 a popular referendum was organized in the three Piuran communities where Rio Blanco proposes to site an open pit mine. This was an opportunity for local citizens to express their true opinions and desires concerning the heap leach project to mine copper, molybdenum and other metals on a massive scale.
At stake here are the rights of local governments as well as the basic human rights to participate in government and private plans affecting their future.
Associated as the Rural Municipalities of Piura, the mayors of 12 municipalities agreed to support this democratic exercise, which was also legalized by the National Council on Human Rights, a branch of the Ministry of Justice of Peru.
Composed of seven district municipalities in the Piuran Andes, the Andean Central Community also decisively supported this grassroots democratic referendum as did the People’s Ombudsman of Piura.
The People's Ombudsman had earlier denounced an ecologically damaging exploratory invasion committed by the Majaz mining company, the Peruvian branch of Monterrico Metals of England.
As part of the democratic process, conservationists such as Alejandro Zegarra-Pezo with support from the Andean Tapir Fund, prepared to present information to the voters concerning what mining would mean for the last remaining cloud forests and paramos in Piura.
These conservationists were attacked by promining factions, including employees of the national and state government. Some government officials have waged a well-financed campaign to promote mining and to suppress those opposed to it, often denouncing them as communists, terrorists, or illiterate people.
Nonetheless, on Sunday, September 16, the referendum took place in an orderly fashion. Many of the campesinos had walked a day or more to exercise their right to vote.
The Majaz mining company sent hundreds of hired people to disrupt the vote. This disruption included incitement to physical violence through insults. In spite of these efforts, observed by Zegarra, the public referendum resulted in a resounding rejection of the mining project.
The communities on whose lands the Rio Blanco mining project is planned clearly opted for protecting their remaining vital watersheds and wilderness habitats.
With a substantial majority of eligible voters voting in all three communities, the count was about 95 percent opposed to mining in each of the three communities.