This larger snippet has mines separated by type and includes the use of
a mining skill.  Like the basic mining snippet, your players will need
to have a pick and be holding it to mine.  Rooms will need to have a
vein object reset into them for players to mine.  Once the ore is mined,
they will be told that there is none there.  I find it best to have
the ore scattered throughout the mines and being unseen.

You will need to create the following:
Skills:
	mine
Object Types:
	silvervein
	goldvein
	gemvein
	pick
Specific Objects:
	gemstone - declared in your game as a specific vnum
Room Types:
	goldmine
	silvermine
	gemmine

This code was written using a relative of ROM, you will need to convert
a few syntax styles to make it work.  This shouldn't be a problem for
someone handy with code, other wise check out my Basic Mining Snippet.
Feel free to use this snippet as you see fit, but please keep the tag
at the top to give me credit for the time spent on it, especially if
you plant to post the code to a web site or ftp site.  All of the 
rom/diku/dot/merc/oblivian anyhthing you can think of type licenses 
forbidding profit made from this code apply.