11. Two small reverberatory furnaces were installed at the smelter. 12. The first mine established during this period was at reverberatory furnaces were operating by 1872. 13. In July, the first reverberatory furnace went into service the foundation of metallurgical manufacturing. 14. A new reverberatory furnace was built and a water pipeline laid to the Severn River. 15. Puddling was done in a reverberatory furnace , allowing coal or coke to be used as fuel. 16. In the following decades, reverberatory furnaces were widely adopted for smelting these metals and also tin. 17. This was probably a reverberatory furnace and the first known use of such for this purpose. 18. This improved operating conditions within the reverberatory furnace . 19. By 2002, 20 of the 30 reverberatory furnaces still operating in 1994 had been shut down. 20. Smelting was initially undertaken using sinter plants and blast furnaces, or with roasters and reverberatory furnaces .
