On 18 Dec, 13:40, wrote:
On Mon, 17 Dec 2012 23:47:20 -0800 (PST), e27002





wrote:
On 17 Dec, 13:46, "Richard J." wrote:
Recliner wrote on 17 December 2012 11:08:58 ...

Steam train back on tube track for 150-year anniversary celebrations

Test run for London Underground's anniversary sees restored locomotive
pull Victorian carriage from Earl's Court to Moorgate

Gwyn Topham, transport correspondent
The Guardian, Sunday 16 December 2012 19.00 GMT
[snip]
From:
http://www.guardian.co.uk/uk/2012/de...ndon-undergrou....

There's another great photo in the Standard's report athttp://www.standard.co.uk/news/transport/full-circle-120yearold-steam...

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Which section was tube track? *AFIK Earls Court to Moorgate is all sub-
surface. *Moreover, one cannot bring back something which never
existed. *The tube lines were electric from their beginning.

Existing ones might have been, The Tower subway was cable operated.

Accepted. And, the cable may have been run thru a stationary steam
engine. The power for the electric lines may have been steam
generated. But, NO tube lines ever had a steam motive power unit
within its consist whilst running in the deep level tunnels.