This technique was at the time the favorite of compact scale meth operations in America—along with the misnamed “Nazi process,” which was most common in agricultural parts with use of liquid ammonia fertilizer (Li/NH3 reduction or Birch reduction). Nowadays compact-scale operators want the just one pot “shake and bake” technique, https://damiensnqqr.ampblogs.com/the-greatest-guide-to-blue-crystal-math-66475368