The Distribution. Of the ≈ 220 entries on this list, approx. 6% distributed globally remain uncertain. These locations (n ≈ 13) originate from reports that provide country-scale tabulations, but for which the location of the sites can’t be corroborated from other sources (So: as example, one report may indicate that 6 mercury cell chlor-alkali facilities were built and operated in Sweden, but review of other reports, conference proceedings and publications only confirm locations for 5 facilities). In these instances, the numbered placeholder is retained and counted on this list for now, while recognizing that the report from which the tabulated listing originated may have been in error.

All information reviewed for this compilation is publicly available, either from actual libraries or via the Interwebz. Nothing fancy to this – just a list I compiled over the years I worked on this industry and thought about what clean-up of these sites can or could or should look like. If you want to know more (than you ever wanted to know) about the chlor-alkali industry, here’s a start (TheLevelUp), although there’s all kinds of good info on-line also. Am thinking about this now as a handbook for sharing characterization, evaluation and remedial design information for these sites.