June 21, 1965

Under contract from the U.S. Atomic Energy Commission (AEC), Universities Research Associates (URA) incorporates to build and operate a new national accelerator laboratory.

December 16, 1966

The AEC chooses a site 30 miles west of Chicago.

March 1, 1967

URA appoints Robert Wilson Fermilab's first director.

June 15, 1967

Operations begin at Oak Brook, Illinois.

November 21, 1967

President Lyndon Johnson signs bill authorizing the National Accelerator Laboratory

December 1, 1968

Groundbreaking for Linac.

October 3, 1969

Groundbreaking for Main Ring.

March 1, 1972

First 200 GeV proton beam passes through Main Ring.

December 14, 1972

Main Ring energy doubled to 400 GeV.

May 11, 1974

NAL renamed ìFermi National Accelerator Laboratory.î

May-June 1977

Fermilab experiementers announce discovery of bottom quark.

October 19, 1978

Leon Lederman appointed director.

August 16, 1983

Groundbreaking for Antiproton Source.

February 16, 1984

Acceleration of Tevatron beam to 800 GeV.

October 13, 1985

First observation of proton-antiproton collisions by CDF collider detector at 1.6 TeV center-of-mass energy.

October 21, 1986

Acceleration of Tevatron beam to 900 GeV.

November 30, 1986

First proton-antiproton collisions at 1.8 TeV.

April 20, 1989

John Peoples appointed director.

February 14, 1992

DZero collider detector commissioned.

September 25, 1992

Dedication of Lederman Science Education Center.

March 22, 1993

Groundbreaking for Main Injector accelerator.

September 4, 1993

New 400 MeV Linac commissioned.

April 26, 1994

Announcement of first direct evidence for top quark.

February 2, 1995

Tevatron sets new world record for number of high-energy proton-antiproton particle collisions.

March 3, 1995

Fermilab experimenters announce discovery of top quark.

August 5, 1997

Fermilab extracted a record intensity 800 GeV beam for fixed target experimentsó2.86E13.

March 1998

Discovery of Bc Meson.

February 24, 1999

Observation of direct CP violation, in neutral Kaons.