These are some 12"x18"x14' heart pine beams from the former Eagle and Phoenix Textile Mill on river bank of the Chattahoochee River in Columbus GA. They are turning the mill into lofts and condos overlooking the river. The lumber from the beams are going to be used as decorative ceiling decking.
The first picture shows (to enlarge, double click on the photo) the saw cuts made before I started hitting nails. The building contractor tried to remove all the nails out he could see but apparently he missed some. I ruined 6 blades in the process. Never again, everytime I've sawed heart pine beams I've hit nails.
The second picture shows the nail holes and the distinctive staining of the wood by the iron in the nails. The lumber does have character and there is something to be said for recycling products of nature that not only took many many years to grow but also survived the impending Union attack during the Civil War. Supposedly, the machinery from the mill was removed, coated in grease, and sunk in the Chattahoochee to keep union forces from destroying the mill and the machinery. The Columbus Battle was the last major battle of the Civil War. For more details check out:
The final picture is of the lumber I was able to saw from the beams before the nails stopped me. Fellow sawmillers, avoid heart pine beams unless you have the means to find and remove all nails and foreign objects.