If you want to get back in, consider putting various buy points at 18 through 16.25, with a stop at 16.
This will provide a 5-10% risk entry depending on your cost averaging.
Miners hit 60 bucks only couple of years ago, as the saying buy low sell high, unless of course buying low turns out to not be low enough :)
Considering 2008 crash brought GDX down to 16, its pretty low now.
To the chart!