(Shamelessly re-cycled from Space Modelers http://groups.yahoo.com/group/space-modelers/ )
From the BBC:
1979: Skylab tumbles back to Earth
The US space laboratory, Skylab I, plunged to Earth this evening
scattering debris across the southern Indian Ocean and sparsely
populated Western Australia.
All week there has been mounting speculation over where the spacecraft
would come down. It has been in orbit six years - for the past five of
those it has been unoccupied.
Skylab's last signal was recorded at 1611 GMT. Less than an hour later a
tracking station at Ascension Island in the South Atlantic confirmed the
solar panels were beginning to peel off as the craft descended.
The 77.5 ton Skylab could break into as many as 500 pieces. The 5,100 lb
(2,310 kg) airlock shroud and 3,900 lb (1,767 kg) lead safe, which
protects film from radiation, are expected to survive the heat of
re-entry into the earth's atmosphere.
Head of the NASA task force monitoring Skylab, Richard Smith, said they
had already received reports of hot debris, which had lit up the night
sky, from several points in Western Australia.
'Edge of Cornwall'
Dozens of residents reported seeing debris falling near Kalgoorlie, 370
miles (595 km) northeast of Perth.
Skylab was launched on 14 May 1973 and was lived in by three teams of
astronauts for periods of up to 84 days as they tested human endurance
over long periods of weightlessness.
While the astronauts were on board they were able to carry out many
valuable scientific experiments including analysis of the sun's activity
and how it affected the Earth.
Skylab was abandoned by the last crew in February 1974, since when
scientists have only had limited control over it. It was supposed to
stay in orbit until the mid-1980s when the new shuttle would have come
to its rescue.
A Skylab task force of computer specialists, engineers, lawyers and
public relations experts has been on standby at various NASA centres.
It has been very difficult to predict exactly where and when the craft
would finally come down. Only two days ago, a NASA spokesman had been
predicting it would land near the "edge of Cornwall".
In India, the police in all 22 states were put on full alert and the
civil aviation department was planning to ban flights across the
sub-continent during the crucial hours of re-entry.
Skylab's final orbital path, its 34,981st, passed over the north
Pacific, the north west tip of the United States, south central Canada,
north of Montreal and Ottawa and the state of Maine