BLAKE'S STONE AND ORE BREAKER AND CRUSHER.

For breaking hard and brittle substances to any size. Endorsed by the

leading MINING, MANUFACTURING, and RAILROAD corporations in the UNITED

STATES and FOREIGN COUNTRIES. FIRST PREMIUM wherever exhibited, and

hundreds of testimonials of the _highest character_.

Scientific American, Volume 40, No. 13, March 29, 1879 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures · 第 114 / 162 题