Add Sand Crabs(or other desert creature) for training pures here. Their drops would be noted ores (1 - 5) up to adamant with a rare possibility of getting 25 runite ore noted(1/1000). Aggressive, attacks with melee, max hit is 2. Finishing strike must be done with pickaxe otherwise wouldn't give additional mining exp. Let's say if they were to have 50 Hitpoints - 1000 mining exp. The surrounding area in camp place with clay and with water source in there to get soft clay easily. And of course, bank inside. Would be good for those who don't have 40 crafting to mine clay fast enough. So, sand crabs won't attack you while banking, bank could be placed inside one of those tents.
Off-topic:
Where in the hell is Desert Strykewyrm suggestion here? How come nobody wants it to come ing?...