Lugar: U.S.A
Hora: In January, 2022.
Mina y proyecto: Mina Bingham Canyon
Modelo de perforadora DTH: DM45 HP Y DML
Modelo de martillo DTH: Ame Drill QL60 quick hammer & World famous brand A QL60 shank hammer
Formación rocosa: Las condiciones de las rocas varían mucho, desde rocas suaves (poco abrasivas) hasta rocas muy duras y muy abrasivas.
Configuraciones de bits de botón DTH: QL60 171mm, 10 gauge buttons x 18mm, 10 face buttons x 18mm, two flushing holes.
 Nuevo Bit |  Después de 18 afilados |
Our three pieces of QL60 171mm button bits had been tested from the 7th to 20th of January, as below, it was the summary for the drilling test.
As below, it was our # 1 bit detailed drilling record from the site.
Observaciones:
- Red box: with Ame Drill brand QL60 quick hammer, 0.68 m/Min average speed;
- Yellow box: with world famous brand A QL60 shank hammer, 0.55 m/Min average speed.
As below, it was the summary from the site manager about Ame Drill DTH button bits:
Spanish 
English 
French 