In 1903, it instituted a three-step mother-stamper process to produce more stampers than previously possible. Manual Bates stampers use a self-inking mechanism with four to seven numbered wheels. The stampers would be used in hydraulic presses to mould the LP discs. Some stampers allow for consecutive, repeat, duplicate, and triplicate numbering. The Canadian EP pressing also used British stampers. Two stampers are used, one for each of side of the disc. From these positives, stampers (negatives) would be formed. Accordingly, copy positives, required to replace worn positives, were made from unused early stampers. The company is one of several new ventures planned by the Stampers. The ore was crushed in stampers without using mercury. The lucrative work was largely not innovative, but helped the Stampers learn the console's technology. All of the Stampers live in one compound, including Henry's good-natured nephew Joe Ben. Stampers can also become damaged from handling. The Stampers were surprised that Nintendo did not directly acquire the studio. The Stampers were reticent with the press and only rarely gave interviews.