If you read the OPs post carefully, they are not PINE trees. They are SPRUCE trees.
Technodeb, one can't go by how old the trees are. What is the average diameter? Not circumference--diameter. How tall are they? How tall to a 5 inch top--or what the minimum diameter for a log at the mill would be? What is the distance to the mill or whatever kind of processing facility Ohio has?
I doubt if they are worth enough to log. We can't tell if you have enough for a load. We can't tell what it would take to get them out.
If you are serious, you should try to find a forester, or arborist.
We don't call Spruce trees--Pine trees. They are spruce. We don't call fir trees-- pine trees. They are fir. We call Ponderosa Pine, White Pine, Norway Pine, Scots Pine, Lodgepole pine, pine. Pines have long needles. Where I live, there are different prices for different species, so it is important to know what the tree is.
Grab a branch. If you say OUCH, it is most likely some kind of spruce. Spruce has sharp, stiff needles.
Firs have short, softer needles. They don't poke.
Pictures would help us armchair advise you. Armchair advice isn't very accurate. But we'd like to see pictures posted.