Strand jacking system - GIF

[BuffaloJohn]

I had to look this one up. I found this:
"A strand jack is a system similar to a jack, however in this case the load is not pushed up, but the jack pulls up a bundle of wires, which is called a strand."

and this:
"The Enerpac strand jack system provides precise synchronous control in a compact footprint. With lifting load capacities from 17 to 1,405 tons per jack, strand jacks are an ideal heavy lifting solution when a conventional crane is not practical or economical. Up to 60 strand jacks can be simultaneously controlled by a single operator from a central location which optimizes safety."