Did Altoona loco shops have cat wire for moving around electrics

Trains Magazine Steam & Preservation
1

I saw some remnants of what looked like Cat poles around the shops so maybe

2

I believe there was only ‘islanded’ cat for testing locomotives, not running them around the shops.

The point is not that they operated them, but that they built them there (including the O1s, P5s, and many GG1s). And it makes sense that they would shakedown-test them after construction…

3

I would doubt it. Penn Station was electrified with third rail in 1910 and the Philadelphia communter operation with catenary in

"On September 12, 1915, electrification of the line from Philadelphia to Paoli, Pennsylvania, was completed.[44] Other Philadelphia lines electrified were the Chestnut Hill Branch (March 30, 1918),[45] White Marsh (1924), the main line to Wilmington, Delaware (September 30, 1928),

4

I would doubt it. Penn Station was electrified with third rail in 1910 and the Philadelphia communter operation with catenary in

"On September 12, 1915, electrification of the line from Philadelphia to Paoli, Pennsylvania, was completed.[44] Other Philadelphia lines electrified were the Chestnut Hill Branch (March 30, 1918),[45] White Marsh (1924), the main line to