how is it operated?
In 1860, the roughly 186 Pony Express stations were about apart along the Pony Express route. At each station stop, the express rider would change to a fresh horse, taking only the mail pouch called a "mochila" (from the Spanish for pouch or backpack) with him.  In emergencies, a given rider might ride two stages back to back, over 20 hours on a quickly moving horse.
Pony Express
In 1860, the roughly 186 Pony Express stations were about apart along the Pony Express route. At each station stop, the express rider would change to a fresh horse, taking only the mail pouch called a "mochila" (from the Spanish for pouch or backpack) with him.
where did the first pony express mail delivery take place UNANSWERABLE what is it? It was a mail service delivering messages, newspapers, and mail using relays of horse-mounted riders
wiki:11640855
Pony Express [SEP] Operation
In 1860, the roughly 186 Pony Express stations were about apart along the Pony Express route. At each station stop, the express rider would change to a fresh horse, taking only the mail pouch called a "mochila" (from the Spanish for pouch or backpack) with him. The employers stressed the importance of the pouch. They often said that, if it came to be, the horse and rider should perish before the "mochila" did. The "mochila" was thrown over the saddle and held in place by the weight of the rider sitting on it. Each corner had a "cantina," or pocket.