PMHL was floated on AIM in January 06 with a market cap about twice that of WCC.
It's figures (go to www.londonstockexchange.com) to December 06 were pretty healthy and they even appear to be paying a divi.
In common with WCC, the shares look pretty illiquid (RNS = 3000 against 2000 for WCC) and volumes light, though significantly greater than for WCC.
Sunday Times brief specific comment of 3rd June 2007 copied below - it was part of a very much longer article about investing in China .....
Prosperity Minerals - China has become the worlds largest cement producer with an output of 1 billion tonnes a year. Domestic demand is expected to reach 1.2 billion tonnes by 2010. Cement is expensive to move around so it needs to be made by local firms such as Prosperity, one of Hargreaves favourite stocks at 153p.
At time of writing I have not yet put in any money.
Chart looks very encouraging insofar as a nice golden cross, albeit only bewtween 25 + 50 dma has now formed.