Here are a couple of ideas I had:
Half-Mile Hailer: The Half-Mile Hailer is one of our most popular products as the many testimonies prove (testimony 1, testimony 2). The first miner could have sent this down for the next miner to come up, so that they could be heard loud and clear from a half-mile away with this powerful portable sound system.
Belt-Blaster Pro: Many of the miners were so thankful for the help they received that they went around hugging and personally thanking everyone who helped rescue them. For the others, they could have just used a Belt-Blaster to communicate their message.
Although I'm not sure if this happened it would generate $41 million in exposure for Amplivox, it is fun to think about.
² This is assuming the Chilean miners were not already Amplivox customers after seeing our Sound Comparison Guide in Spanish: (Guia del Sonido Comparación).