Well the thing is, Threeb, there's such a backlog of requests that I've given up trying to answer them in the order they were proposed. I'm just going by the order in which the topics are displayed - which is based on the date of the latest post in each thread. So every time you post a reminder, your proposal loses its place in the queue, as it were.
Anyhow, yarder is listed in the Shorter Oxford and Wiktionary, and is certainly used by those who need to talk about such machines, so I'll add it.