Engineer

F

Founding of Colonia Claudia Victricensis at Camulodunum

49

H

Hadrian's visit to Britain initiating wall plans

122

C

Construction of Hadrian's Wall begins

122

C

Completion of Hadrian's Wall

122

C

Completion of Hadrian's Wall

128

C

Completion of the Antonine Wall

142

S

Siege of Nicaea

1097

S

Siege of Waterford

1170

S

Siege of Acre

1191

S

Siege of Calais (beginning)

1346

G

Galveston Commission Government Adoption

1901

G

Galveston Seawall Groundbreaking

1902

E

ENIAC Unveiled

1946

D

Dedication of the ENIAC

1946

M

Manchester Mark 1 Becomes Operational

1949

M

Manchester Mark 1 First Program Run

1949

A

ACE Pilot Model First Program Run

1950

D

Delivery of the first UNIVAC I to the United States Census Bureau

1951

C

Completion of TRADIC, the First Transistor Computer

1954

F

First Silicon Transistor Demonstration

1954

L

Launch of Sputnik 1

1957

S

Sputnik 1 Launch

1957

L

Launch of Sputnik 1

1957

S

Sputnik 1 Launch

1957

E

Explorer 1 launch

1958

L

Launch of Explorer 1

1958

L

Luna 1 Launch

1959

V

Vostok 2 Launch

1961

V

Vostok 1 Launch

1961

M

Mercury-Atlas 6 (Friendship 7)

1962