Tracy's words, from page one of his research journal:

Last week I visited with Air Force and Commerce Department officials in Washington to obtain a clarification as to the scope of the secrecy order on the G.E. Patent applications. I was told that it applied only to those applications and that I could freely and openly use any new apparatus that I might devise. On this basis I am going ahead with some new ideas that I have . . .

Follow along as another high pressure press capable of synthesizing diamond is developed, find when Tracy first thought of 'diamond growth from powder (PCD)', and read about it in Tracy's own words and scientific notes.

• Part 1: Up to page 237 of the book.
• Part 2: Page 238 through to the end of the book, which is on page 499.

Note: these are dummy links as the originals have not yet been moved across.