Chilean Mallets question

I was recently asked about the Mallets used on these Chilean railroads. Can anyone provide some information or history?
Thanks,
Bruce Pryor
- Ferrocarril Arica La Paz ( FCALP ) 3
Baldwin mallet and 4 mallet come from Hannomag ( Germany ) the last Balwin lasted to 1956 but out of service, when was sold as scrap.
- Anglo Chilean Nitrate Company, This company that also owns the Ferrocarril de Tocopilla al Toco. Is reputed to had 4 - 5 or 9 mallets originally for the arcangel -volgoda Ry. in Russia.
- Ferrocaril de Potrerillos, Potrerillos was a copper mine opened in 1917 by the Braden Copper Co.