What do the two curly graphics to the left and right of this map represent? They are the only two on the map and seem to be attached to the border of an area.
I'm sorry I haven't posted the full map, I'm not sure I'm allowed.
The curly S shaped symbol, called an "area brace symbol" was used to indicate that the two properties actually share the same property number. It's possible that it was all once considered one property but the middle bit was subdivided and the two properties on the side maintain the same number.
They are also sometimes called "field ties". There's another name for it, but it escapes me at the moment.
EDIT: I just remembered that this is sometimes called a "Vinculum". Though, I don't know how common it is.
Just to add some more information about vinculums (vinvulae?) as I recently encountered some of these, too. Land Information New Zealand has a FAQ which has the following section:
Judging by your map snippet, perhaps the mine divided a parcel of land, which was not subsequently redivided into two sections.