RE: bottom has been put inI added more today at $46.25. Even if this isn't the bottom, I consider MDI very low risk at this price. At worst it's dead money through further volatility until we get more earnings reports.
Another note: The Chairman, David Tennant, bought at higher prices not long ago. If you look at his record of buys and sells at sedi, you'll see that his timing is quite good.
I also regard Energold EGD as a buy, but between the two at current levels I'd go for MDI first as the more senior company with the more consistent past earnings record.