1. H. Schütz, MFA training workshop 31.8.07 1 EW-MFA Training Workshop – 31. August 2007 Training Session: - DE used of metal ores and non-metallic minerals

2. H. Schütz, MFA training workshop 31.8.07 2 DE used: metal ores and non metallic minerals - Intro  High relevance for DE – usually more than 50% - less for metals, but strategic and economic importance  Distinguishing construction minerals requires additional efforts and is commonly not precise (roughly A.3.1, A.3.2 and A.3.4) but more accurate at detailed data compilation  Construction minerals typically dominate DEused of minerals

3. H. Schütz, MFA training workshop 31.8.07 3 DE used: metal ores and non metallic minerals – Data sources  National mining statistics first: industrial minerals and metal ores  However, often insufficient for bulk constr. minerals like sand and gravel  More comprehensive data ev. from industrial associations (continuity!)  Use international mining statistics (BGS, USGS, UN, NewCronos)  Perform estimates (esp. construction minerals)

4. H. Schütz, MFA training workshop 31.8.07 4 DE used: metal ores and non metallic minerals – Conventions  Aim at following the CPA terminology  Refer to system boundary: run-of-mine production or gross ore or crude ore -> crude mineral to first processing step => see next slide (no overburden; no net metal content for DEused but as additional data)  Coupled production: e.g. lead-zinc ores (-> proposal in the guide)  Estimations for bulk construction minerals as follows

5. H. Schütz, MFA training workshop 31.8.07 5 DE used: metal ores and non metallic minerals – Conventions

6. H. Schütz, MFA training workshop 31.8.07 6 DE used: metal ores and non metallic minerals – Data compilation  Statistical data for run-of-mine i.g.  Estimate of r-o-m from e.g. metal contents  Estimates for bulk minerals for construction proposed are: - limestone for cement - sand and gravel for concrete and for road construction and maintenance - common clays for the production of bricks

7. H. Schütz, MFA training workshop 31.8.07 7 DE used: metal ores and non metallic minerals – Data estimations  Limestone based on cement clinker or cement production data  Sand and Gravel for construction - check: tonnes per capita - >> 1t/cap/yr - contact national experts at first - (1) estimate S&G for concrete production - (2) estimate S&G for road constr.+maint. based on data for km roads newly built resp. total lengths of roads, by types - (1) + (2) compared with statistical data – use higher number - ev. Add specific number for industrial sands

8. H. Schütz, MFA training workshop 31.8.07 8 DE used: metal ores and non metallic minerals – Data estimations  Clays and loams for construction of bricks and tiles - for production of full and lug bricks - for production of roof bricks - for production of ceiling bricks -> compare with reported statistics data – use higher number (10% tolerance)

9. H. Schütz, MFA training workshop 31.8.07 9 DE used: metal ores and non metallic minerals – Data compilation  Special case Sulphur: - exclude S which is a by-product of extraction of fossils -> unused extrac. - exclude S produced in refinery through desulph. of fossils -> already in weight of energy carriers - S from mining: only this category counts (under A.3.6)

10. H. Schütz, MFA training workshop 31.8.07 10 DE used: metal ores and non metallic minerals – Special issues  Statistical data for aggregated categories like “crushed rock” or “crushed stone” -> cannot be precisely compared with categories in the guide, may comprise a wide range of natural stones -> double counting possible -> in case category is higher than total of categories compiled after guide the difference may be added as additional amount n.f.c. to A.3.2 (with footnote)