Since the detection, location of energies seems to be a worldwide occurrence, and since various means, materials and methods were no doubt available in differing locales, I have no doubt that the techniques varied, and I'm not even sure the aim was always the same either. The story about the femur as an L-rod is certainly interesting! I suppose it was a bit easier to find a spare skeleton versus moving a multi-ton stone into the right spot.
And speaking of shamans, I can't say with any assurance that I was previously trained in this but it certainly was something I caught onto easily. You told me once that I had 22 previous incarnations and my source verifies this, but the figure I'm given for you is 26 previous rotations, not 25. I would suppose this is part of why intention works better for you?
In any case, what I was trying to get at is what various practitioners, in different places and times have in common in terms of materials used. For instance, despite the variations in size, configuration, placement, and level of refinement of whatever materials might have been used, were the principal active materials always copper or iron based?
"Develop an infallible technique, then place yourself at the mercy of inspiration." (from a craftsman, but it applies widely)