Did Tesla disclose?

[sparks]

   Below is quote from a letter written by Tesla in 1904.  Believe it was when Tesla was constructing the Wardenclyffe magnifying transmitter.  The letter mostly describes how he discovered standing waves produced by an electrical storm and how he was going to produce a manmade electrical storm and transmit power all over the globe.  Then he throws this in.    "The first of these central plants would have been already completed had it not been for unforeseen delays which, fortunately, have nothing to do with its purely technical features.  But this loss of time, while vexatious, may, after all, prove to be a blessing in disguise.  The best design of which I know has been adopted, and the transmitter will emit a wave complex of total maximum activity of ten million horse-power, one per cent. of which is amply sufficient to "girdle the globe." This enormous rate of energy delivery, approximately twice that of the combined falls of Niagara, is obtainable only by the use of certain artifices, which I shall make known in due course."
       My question is did Tesla ever make known his "certain artifices".  He certainly didn't have a 10 megawatt steam generation plant at his disposal in New Jersey.  .