Rompe-roca

Divine expls were extensively used at the end of the I9th century, not only in the US but also in some foreign countries, such as China where they were used in construction of railraods. In Cuba, an expl known as " rompe-roca consisted of K chlorate, NB with a small amt of red 1 ead and red dye... 

Rompe-roca. A Cuban expl similar to Rack-a... 

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See also in sourсe #XX -- [ , ]

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