Casualties that the Army and the FC are taking is being regularly reported. There is no censorship on this as most of the dead and wounded come from the settled areas of Pakistan and with the local media being all pervasive, its not easy to keep such things hidden in Pakistan any longer.
Secondly, this entire operation is being looked upon by many as if the number of casualties inflicted on the militants is the one and only success metric. This is clearly not the case and is certainly not the success criteria that the Army is using to evaluate the operation. The Army actually has no interest in killing each and every one of the militants. If anything it wants these elements displaced from NWA as this was the last major refuge for the anti-state militants in the non-settled areas of Pakistan. By displacing the militants and the turning public opinion against the TTP, the idea is to force the local recruits to realize that their fight has no legs to stand on and in the long run it is better for them to get integrated back to the society and put aside their weapons.
As I have stated before, the entire operation is designed to disrupt and dislocate the TTP. In that the operation has been a success and a major reason for the limited Army casualties, thank goodness, is that most of these elements decided to not fight and moved on to the neighbouring Afghan provinces. The potential always exists that they will conduct raids and acts of terrorism but that is certainly better than these folks sitting around inside of the FATA and disrupting life all over Pakistan at will.