SL1 is about as high risk as any mining company gets. It is in Nigeria, it has been trashed by the well known HC P&D crew, it has had to raise using brokers you wouldn't touch with a barge pole if you had a choice, and it has had issues with production grades.
On the positive side (and why I invested), they appear to have sorted out the assay and grade problems, they are mining well, zinc prices are looking good, management appears committed, and they are about to upgrade production with the new wash plant. While I think it is 50/50 that they will avoid disaster, at the current SP the upside appears to me to be worth the risk. We will at least know pretty soon one way or the other as this looks to be the last roll of the dice.
SL1 Price at posting:
1.2¢ Sentiment: Buy Disclosure: Held