Help with cocaine--how to crush up a rock? Best way to take it on the go?

I'm a coke newbie but I have a fat nugget of some supposedly good stuff. I bought it for my girlfriend and got dumped so now I'm unsure how to properly use it. I need some tips.

I don't know how to/the best way to crush it up into powder for consumption. I feel like anything I can think of would cause me to lose half the powder in the process.

Adobe acrobat distiller 5 free download for windows 7 free. Also, if I'm going to be taking it around in a little baggie with me what can I bring to do it with? A key? What if I don't have access to a key? Is there something good/small I could use as a replacement?

If you have any other tips I'd love to know them. Buku kimia kelas xi unggul sudarmo pdf 2017.