http://book.klll.cc/ebooks/subject/35701.opds 2025-08-11T06:04:56Z Books about Lead mines and mining (sorted by popularity) Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-08-11T06:04:56Z https://book.klll.cc/ebooks/63784.opds Lead Smelting and Refining, With Some Notes on Lead Mining 214 downloads