The bombs explode Friday between 16.37 and 17.24 in Milan and Rome. The carnage is in Milan, at the Banca dell'Agricolura in Piazza Fontana, crowded as usual on Friday, the day of fair and market.
The attempter has placed the black pseudo-skinny purse which contains the explosive under the table in the center of the foyer where the business negotiations take place.
Sixteen people die, lots of the ninety injured have limb amputed by splinters.

The explosion stops the clock in the square at 16.37; after a while, in an other bank few hundreds meters away, in Piazza della Scala, a clerk find a black purse and hand it over to the direction.
It's the second bomb in Milan, the one at the Banca Commmerciale Italiana.
It hasn't exploded, perhaps because the timer odf the detonator has not worked.
But it 'll be blasted in a hurry few hours later by the the police-artificers, who first dig it into a hole in the court of the bank

source: La strage di Stato, Samoną e Savelli.

This is the first absurdity of the inquries: destroyng the evidence, the possible signature of the perpetrators was erased.

Pietro Valpreda

More victim than in any case responsable, he was the first to be put into the headlines of any italian newspaper as the monster.
Dancer, with no fast employment, limped by Brugher sindrome, an illness which make dancin impossible, of anarchic conviction was the ideal suspect: a sort of shakerspeare“ Richard III, Hugo's Hutch.

The main evidence against him was the testimony of a taxidriver, who, according to accusatory teory, had carried the perpetrator from one place to the other.
Who has ever been in Milan does know that taking a taxi from one place to the other doesn't make any sense, especially if you have a couple of bombs with you and you keep low profile.
Rolandi, the taxi-driver, a comunist, recognized him in a disputable confrontation, died a little while after, so that the evidence of the Valpreda defence was never really tested.
Among the camrades of the anarchic groups some new-fascist infiltrated: among them Mario Merlino. Who could have been confused with Valpreda. That doesn't mean Merlino was the perpetrator, I just quote the point of the defence

the Contro-inquest Just after the official inquiry boasted its first result a group of left wing citizens start to collect data about the attept.

Beside a courageous group of journalists, among them Giorgio Bocca Giampaolo Pansa Camilla Cederna started reading critically the evidence produced by the police and givin an ear to the result of the contro-inquest kept the public opinion aware of the developments in the search of the truth

After almost 30 years no definite answer has been given to the question who did it?

to be continued