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Specific TMR database

Total Material Requirement, TMR, is one of the indicators quantifying "mining activities" in the unit of weight. This is also addressed as "mining footprint".


About the specific TMR database

本サイトでは,関与物質総量(Total Material Requirement, TMR)の情報を提供いたします.具体的にはTMR係数(1単位の製品やサービスを提供するために必要な採掘活動量,単位:kg-TMR/kg, kg-TMR/L, kg-TMR/kWh等)の提供を目的としています.ソース(文献)までたどることができるデータベースの構築を目指しています.我々以外のグループが推算された例も掲載したいと思っております.未掲載分がありましたらご連絡頂ければ大変ありがたく存じます.


In our website, we are providing information for total material requirement, TMR. More concretely, we summarize database for specific TMR with reference(s). The specific TMR is one of measures to quantify mining activities to provide unit amount of product or service (unit: kg-TMR/kg, kg-TMR/kWh, etc.), considering hidden flow. We are welcome to add specific TMRs by other researchers.

As of today (early 2022), we have already estimated the specific TMR for more than 1200 substances, materials, products and processes. Although we only disclose published data, if you need unlisted data privately, please contact us through here.





There is no need to contact with us when you use the specific data listed here. But please add primary reference(s). We are happy if you could refer our website as well. It should be noted that every data was estimated under specified assumptions or case studies. Thus, when you use our database, never forget to pay attention to these assumptions. Note that in the database, you can find "NO-TMR" or "UO-TMR". The former is the specifi TMR for obtaining the target material from a natural resource (mine), and the latter is that for obtaining the target material from an urban mine (i.e., TMR for recycling). In actual metals, the two are sometimes mixed, in which case it is simply referred to as “TMR". See this paper for more details.


If you want to access the spreadsheet directly, please click here.