the high development costs

The problem/risk with CTO (along with BCD and many other narrow vein underground miners - with veins of the 1, 2 or 3 metre variety or gold pods in CTO's case ) is that they may never become profitable.

What long suffering shareholders may need to consider for themselves ..is
The veins or pods themselves may indeed contain say 10g/T on average or more sometimes .. but if you need to build expensive tunnels to access the ore - and need to dig and remove say 39 tons of soil to get to that 10g/T vein - you are not really talking about 10g/T are you ? ,, but in reality it's 10g per 40 tons.

And 10g/T is only 0.25g/T !

Therein may lay the problem... and it may have nothing to do with low production rates.

Shareholder have a right to know what is going on ...
I think the responsible thing to do (and maybe this should have been done a long time ago for both BCD and CTO) is....Management should get a reputable company to conduct an independent assessment of the mine - and if it's found to be unprofitable at todays costings (as I suspect to be) - the responsible thing to do may be to cease operating, until the day the price of gold and the the costings make it profitable.

Relying on shareholders funds to keep it ticking over unprofitably (if that's the plan of both BCD and CTO) is wrong.

Contrasting CTO and BCD with a profitable underground mine..
In underground mines with decent sized 5 metre plus wide veins/shoots on the other hand - you can actually tunnel and mine at the same time - as you are always in the midst of the wide mineralisation. There is no waste here.
So Century mine was profitable for that reason.,, it may have had a lowly 9g/T or 6g/T .. but the veins/shoots were that wide that it actually allowed it to get the 6g/T or 9g/T out of them (with little or no waste)... as they were tunneling and mining the veins at the same time ! .. basically they had one long continuous stope.

That made the mine profitable.

and with Century it was easy to follow these big veins - you are not looking for haphazardly located gold pods as with CTO.

I'm not accusing the company of any wrongdoing, or breaking ASX rules but some clarity and an independent report on the mine may not be a bad thing and it would at least answer the questions of long suffering shareholders,