Gardens restoration evidently demands a lot of labour (dominantly male so far), but there is some impressive equipment to see close up. Earlier on the paths were stripped by a complicated gadget, and today (August 16th) the new asphalt is being spread by this paver:

They promise a smaller version when it comes to the paths under the Arches! Meanwhile it works at some pace, aided by several blokes as you can see here, together with the resultant surface.