1923: SODA SULPHATE MILL IS MAKING PROGRESS.
"The sulphate of soda mill at Camp Verde is making remarkable progress toward completion under the direction of Milton Staples, superintendent, and the machinery is being placed practically as soon as it can be delivered. Both the coarse and fine grinders are now on the ground and in position, and the washers have been shipped from the factory on the coast. The foundations for the big storage bins have been poured and the minor structures, conveyors, elevators, etc., are in an advanced state of progress."
"Superintendent Staples is as valuable a 'find' as the company has made to date, for he has behind him over eight years of experience at the salt plant at Amboy, California, where rock salt is washed free from clay, and he is thoroughly familiar with the process that will obtain at Camp Verde and which are closely similar to those practiced at Amboy. The natural thenardite has to be freed by washing, from the clay that has penetrated the mass in the course of the ages that have elapsed since it was laid down, just as the salt at Amboy has to be freed from the clay with which it has become mixed."
"With Mr. Staples at the mechanical end, there is no longer any doubt that the plant will be ready for its test run about December 1 and possibly a little earlier."
"The Verde Copper News has already mentioned the fact that the deposit at Camp Verde is in a class by itself --- a unique and freakish precipitation of a valuable commercial product for which the demand is constantly increasing." ...
"The bed or stratum of soda is evidently 200 feet thick and covers at least 60 acres in extent. The quantity is estimated to exceed 25,000,000 tons."
(Verde Copper News; Tuesday, October 16, 1923; pages 1, 6.)