Not to poo poo those numbers, but installation costs include those variables plus several others.
Regardless, since we don't have hard numbers to measure the company's progress, I still try to look at the company from a "global" perspective of from what information we do have available (which is mostly information about new projects). From that, I continue to sense the company is continuing positive growth in at least the pipe installation side of the business. I've not seen enough bits and pieces about Chemfeed, etc to really understand how they are doing from a growth and profit perspective.
Might continue to be throwing good money after bad, but I bought another 30K shares last week and will buy more if it dips back down much. But for now, I am glad to see it at .155.
But do your own DD.