Hi Tim,
Rather later than planned here's the photo I said I'd taken with you in mind.
A few weekends ago we went up to Chesters Roman fort on Hadrian's Wall. It's just over 90 miles there so only about a gentle 2 and a bit hour's drive. We went up for a conducted tour of the small but very well-stocked museum there by the curator as well as a walk round the extensive remains of the fort itself. However, the walk was shortened by torrential rain and hail.
The curator's talk was very interesting and afterwards we had time to look round the musem itself. There are only two rooms, but they are full of Roman artefacts as the museum was created by the man who first saw the need to protect Hadrian's Wall and the related forts etc. Some of the items are rated as some of the best, if not the best, finds in the whole of the Roman Empire. Anyway, at the back of one of the cases were a Roman pickaxe and a Roman entrenching tool, and I thought of you and Marius's mule, so here's a photo. The pickaxe is the larger piece at the back of the case with the entrenching tool in front of it, not that that is really necessary as they are immediately recognisable for what they are, even though the "blade" of the pickaxe is all in one plane and with out the non-pointed end at right-angles to the pointed end.