Building the tennis courts (now a nice pine grove, if entirely too well draining soil).  The team is the farm’s work team, probably Percherons or primarily of Percheron stock.  The cart appears to have a rather ingenious design: the actual dump-cart is balanced on the back wheels, which is actually a trailer.  It must have been very maneuverable, if tricky to load.  The wheels are wood, with iron frames and hubs.

Note the rather nice view over Beeney and West hills, the trees in the west hedgerow now obscure almost all of this view.  Note also that the men are wearing coats and hats, despite doing hard work in the full sun, in late August!