Rick Chamberlain writes:

I have the mill resting on a couple of 4x4s, and can easily get her a
bit higher. Tha challenge here is how do I transfer the mill from the
wooden platform to the cart without killing myself.

Jacking or other single-point lifting from below is inherently unstable and
therefore risky in unforeseeable ways. Avoid jacking, but if you must
jack, constrain tipping with adequate rigging before you jack.

Otherwise:

http://www.truetex.com/moveclausing.htm