Consider carefully the second article following, in the light of the first:
Note that in the first article, the author gets the history of relativity right: Einstein did not incorporate the idea of torsion - a spiraling and folding and pleating of spacetime in the presence of a rotating mass - into his equations. The reason? The effect of torsion, mathematically, and as indicated by the article itself, was so small, that to simplify calculations, Einstein simply dispensed with it.
Not so his colleagues Lense and Thirring, who recognized something significant was being thrown out, namely, the rotational structure of spacetime itself. As the bulk of the article indicates, there were scientists interested in the possibilities of coupling effects of gravity and magnetism, and gravity and electricity, and with their frame-dragging extension of General Relativity, Lense and Thirring could certainly be argued to fall into that category. The effects of torsion were small, indeed, almost negligible, but nonetheless significant. In fact, we depend on calculations of the Lense-Thirring effect for one simple reason: satellites and the global positioning network. In this age of precise positioning, a variation of a few centimeters, if not calculated on a regular basis, will lead eventually to satellites being "out of position" over a period of time, due to this effect, and that in turn would affect calculations for the entire network.
The first article is interesting for quite a different reason, and that is the short statement to the effect of spin on the idea of dynamic kontrabary(contrabary), or to give it its more popular name, antigravity. Why - if one lets ones arms hang freely and then spins - do the arms want to rise, as if losing weight relative to the axis of spin?
Someone back in the 1920s and 1930s was certainly interested in the connection of all these ideas. And guess who it was? It was Dr. Walther Gerlach, internationally-renowned physicist (for his part in the celebrated Stern-Gerlach experiment), and eventual project head for the Nazi Bell project. But what few people know is that Gerlach conducted a correspondence with Thirring and Lense, precisely over their frame-dragging predictions. All indicators are that Gerlach regarded this as the key to the mystery of gravity...and to its control.
Let us also remember someone else - also not mentioned in the article - who realized that spinning gyroscopes and ultra-fine measurement equipment, might detect small variations of mass over time and dependent upon when and where tests were conducted: Russian astrophysicist Dr. Nikolai Kozyrev.
So what's the bottom line? My suspicion - and it is only a suspicion - is that these types of measurements and experiments have been running, quietly and secretly, for quite some time. Kozyrev is, for one thing, proof of that. Accurate measurements are required for the mathematical adjustments of the theory.
Even Einstein, having jettisoned torsion in his version of General relativity, reintroduced the notion in some versions of his later unified field theories, a significant step, for it was recognition that there were mysterious coupling effects between gravity and electromagnetism, coupling effects that were, moreover, related to the concept of spin, and the "rotation moment" of local spacetime.