A legal challenge to the merger was raised by Aquila, but was rejected by the Federal Court on 18 April 2006.

Starting in 1914 many of the inhabitants of Aquila worked in the chocolate factory Cima-Norma in Torre Arbeit.

As with the other municipalities of the Blenio Valley, much of the population emigrated to other European countries (often as chestnut roaster, servants and waiters).

The large-scale construction of the dam and the new road tunnel at Toira in 1958, improved the local economy.

[5] The political power in the upper Blenio valley was in the hands of a branch of the De Torre family.

They owned land in Olivone and possessed the patronage rights in the parish church until the oath of Torre in 1182 ended their supremacy.

In 1213 the villages of Olivone and Aquila revolted and united against the Da Locarno family, who had been given power over the valley by canons of Milan.

They were able to drive out the Da Locarno's and return to the previous situation, where they were ruled by a governor out of Lombardy.

The assemblea di uomini liberi (The Assembly of the Free), which is first mentioned in 1136, provided for the management of common forests, alpine pastures and helped maintain the Lukmanier and Greina passes.

By the end of the 14th century the assemblea di uomini liberi took advantage of Olivone's lease on the Santa Maria alpine pasture, which belonged to the abbey of Disentis.

Starting in the High and Late Middle Ages, the village's history follows the course of the entire valley.

[6] The chocolate makers from Olivone enjoyed a good reputation in Italy and France starting in the 17th century.

In the 20th century, tourism grew in importance and initiatives for nature and heritage protection were further promoted.

Olivone retained its agricultural character, but in 1956 it became home to the Blenio Kraftwerke AG power plant and certain construction companies.

[6] The coat of arms of the new municipality was adopted in November 2009 after a public competition won by a graphic design student.

[8] In 2006 the municipality was created with the fusion of Aquila, Campo (Blenio), Ghirone, Olivone and Torre.

It consists of the villages of Aquila, Campo (Blenio), Ghirone, Olivone and Torre.

In addition to the villages, the hamlets of Dangio, Grumarone, Pinaderio, Ponto Aquilesco, Comprovasco, Scona, Sommascona and Lavorceno.

[11] The age distribution, as of 2009[update], in Blenio is; 135 children or 7.5% of the population are between 0 and 9 years old and 171 teenagers or 9.5% are between 10 and 19.

[12] The historical population is given in the following table: The parish church of S. Martino is listed as a Swiss heritage site of national significance.

The villages of Dangio and Olivone Chiesa-Solario are listed in the Inventory of Swiss Heritage Sites.

[14] In the 2007[update] Gran Consiglio election, there were a total of 1,496 registered voters in Blenio, of which 924 or 61.8% voted.

The professional program lasts three years and prepares a student for a job in engineering, nursing, computer science, business, tourism and similar fields.