Construction
A plumber and a building company entered into a joint venture to build a large executive house; the plumber supplied some labour and the land, whilst the others provided all the construction materials and labour.
The house was finished, but could not be sold because the parties could not agree on the value contributed by each, and therefore how to share the proceeds; yet both sides were complaining that they had no money!
Chris suggested that they should mediate in the empty house, using garden furniture, and by compiling a spreadsheet showing stage by stage what each had contributed; the divisible profit was soon agreed.
Mediation
I thought you handled the matter admirably.