I do share your view on GRR I just take a long time and weigh...

I do share your view on GRR I just take a long time and weigh everything up before making a decision.
A strong balance sheet by my criteria is a gearing ratio of less than 25% and a propriertorship ratio of more than 50%. CDD is strong GRR is even stronger with no debt at all.
It's possible to form a view on the acquisitions that make up CDD and in particular the sectors it is exposed to. Environmental, Infrastructure, Scientific Consulting and Aid projects is right - they don't see a future in PPI or Caminosca.
http://www.cardno.com/en-au/mediacentre/Pages/Cardno-Launches-New-Organisational-Structure.aspx
Obviously I will be watching closely for further revenue declines but I would say these sectors are very different to Iron Ore. The company does have resources exposure but far less than it's peers.
The earnings of this company are fairly easy to estimate, the Australian Business is still doing well while the U.S. business suffers due to loss making operations Caminosca and PPI which they will shut or divest.
GRR and CDD are alike in that they have a controlling shareholder but Crescents' modus operandi is very different. They are actively engaged in restoring the business to profitability with a view to sell in 2-4 years from now. Those interests align with long term holders not expecting dividends.
You need to know this yourself, the last 10 years of annual reports is a good start. I am concerned that you are buying without understanding the business.
If the shareprice fell by 50% would you still be a buyer? A contrarian investment strategy takes a certain mindset that is quite rare.