History of lead mining
The 19th century was a period which saw Cornish mining technology used to deepen some of the mines in search of richer ore deposits. However, as the lead veins narrow with depth, this proved unsuccessful, and attention was switched to resmelting the lead-rich waste slag and slimes left over from previous medieval mining.
Miftahul JannatJuly 02, 2021
Provide a sample analysis report, and conduct a feasibility study and analysis based on the local environmental topography.
Eleanor FantJan 14, 2022
The entire team tactfully delivered a project of exceptional quality while staying on schedule & under budget.
Philippe JenvrinOct 25, 2020
We have been using it for a period of time, the quality of the product is very good, we will consider working together again.