In 1906, Governor Pedro L. Rodriguez returned the work, its design was by architect Tomás Cordero, and was built by engineers Francisco Hernández and Luis Carreón.

The process used in the construction was tongue and groove based treatment technique that is quarried pierce each block with a cylindrical bore at the top and sculpt a kind of spike in the lower and the latter fits into the drilled without limestone use any material on the boards, 35 quarriers worked on the first stage and 29 in the second, among the latter Jacinto and Pedro Hernández Baldovino were charged with sculpting acroteria crowning the clock face.

The Banda de Rurales played at the kiosk attached to the tower again and finally ended the monument representing the Centennial of Mexican Independence.

At 21:15, Governor Ladislao Pedro Rodríguez, accompanied by his wife, Virginia Hernández, and various authorities, he made his entry into the plaza where he presided over the ceremony, that began with an overture played by the Banda de Rurales then the lawyer Joaquín González gave the official speech, an oratory on the meaning of Independence and the effort to build the great tower, which was followed by an interpretation of the band, immediately followed by the students in the public schools of Pachuca Hidalgo played the anthem again the Banda de Rurales executed a musical prelude to a poem by Miss Luz Conde, the band ended its involvement with the overture of the opera Tosca and closed the program with the poet Miguel Bracho his recitation of a poem.

The governor on the ground floor, to hear the first ringing pulled the curtain that hid the marble plaque testified to that opening, then rose to the first plant, of the discovered balconies, where he gave the cry of independence and the Mexican National Anthem.

Mr. Dross had arranged the machinery of the clock, so that for fifteen minutes, the ringing is constant, which is added the controlled explosion of dynamite charges that triggered mining companies in the hills surrounding the town, after the fires were which fireworks continued.

A ceremony where it talk about the historical and evolutionary portrait of the Monumental Clock in voice of Luis Corrales Vivar, director of the Casa de la Cultura de Pachuca, are counted with the participation of the Philharmonic Orchestra of Pachuca, it had the Centennial flag located on Elementary School Julián Villagrán and is the same national flag with which, were honored in laying the foundation stone of the Monumental Clock.

The September 24 of 2010 was a light show and a concert by Ranchera music singer Pepe Aguilar, compared with 10 000 spectators, also unveiled a plaque commemorating the centennial.

The Big Ben was made by Edward John Dent following the designs of Edmund Beckett Denison and George Airy, and is a gigantic 5 tonnes machinery.