Giant carousel planer - GIFs

I liked the label "carousel planer" with this one, although I guess this is just a very large vertical lathe? What are they building?

First GIF will autoplay; click the play button with the second one to start it.

<video controls autoplay loop>
<source src="https://s3-us-west-1.amazonaws.com/hmt-forum/carousel_planer1.mp4" type="video/mp4">
Your browser does not support the video tag.
</video>

<video controls loop>
<source src="https://s3-us-west-1.amazonaws.com/hmt-forum/carousel_planer2.mp4" type="video/mp4">
Your browser does not support the video tag.
</video>