Jammed chest
Jammed chest is a loot container that can be opened with a +5 
endeavour check. Inside, there are 8 slots where items are stored.
Each container holds Equipment and Trade Goods, although the quality and quantity of items are variable.
If the endeavour check is successful, the item is renamed, and any remaining contents on the ground will disappear once all the loot has been taken.
Availability
Lore
Before the chest is opened
This chest is locked, and the lock is jammed shut. Looks like someone tried, and failed to open it.
After successfully completing the mechanics endeavour
Using your mechanical know-how, you manage to open the chest. The contents are yours for the taking.
After looting the chest
The chest is now unlocked, its goods pilfered and its purpose fulfilled.