Björn Wallsten

A Cable Laid Is a Cable Played: On the Hibernation Logic behind Urban Infrastructure Mines

Our societies are reliant on metals to such an extent that the total amounts of some of them in the built environment are comparable in size to the remaining amounts in known mountain ores. Because of concerns about mineral scarcity, the United Nations has assessed alternative sources for metal extraction and targeted urban areas in general and infrastructure systems in particular, since these are large, spatially concentrated and rich in metals. Referring to the possibility of recovering these metal stocks, infrastructure systems constitute what material flow researchers has conceptually termed “urban mines.” While most urban infrastructure is in use, significant amounts of cables and pipes have been disconnected and remain in their subsurface locations; they are “hibernating.” In this article, we analyze the occurrence of such hibernation in the Swedish city of Norrköpings urban infrastructure mine where, we know from a previous study, that every fourth kilo of infrastructure is discarded. Our applied perspective is different from the logic of system expansion as a way to meet increased demand often found in the field of infrastructure studies since we are interested in how systems are disconnected and left behind. This enables us to offer a refined understanding of the concepts of infrastructure “decline” and infrastructure “cold spots.” We argue that to prevent the increase of dormant infrastructures and to engage in the urban mining of already dormant infrastructures, we must develop a sensibility to the materiality of derelict infrastructure components and the underlying causes for why they form different kinds of spatial patterns.

Toward Social Material Flow Analysis: On the Usefulness of Boundary Objects in Urban Mining Research

Material flow analysis (MFA) has been an effective tool to identify the scale of physical activity, the allocation of materials across economic sectors for different purposes, and to identify ineff ...

Urks and the Urban Subsurface as Geosocial Formation

This article investigates “urks,” that is, disconnected parts of urban infrastructure that remain in their subsurface location. The reason for engaging in this topic is resource scarcity concerns, as urks contain large amounts of copper and aluminum that could be “mined” for the benefit of the environment. Our starting point is that there is a certain nonstagnant capacity of waste-like entities such as urks and that their resistance to categorization is crucial to encapsulate their political potential (cf. Hawkins 2006; Moore 2012; Hird 2013). We investigate how this indeterminate capacity has implications in terms of where future trajectories for urk recovery are conceivable. The study is based on interviews with respondents from the infrastructure and waste sectors in Sweden. By stressing the relationship between urks and their geosocial subsurface surroundings, we use the respondents’ exploratory interpretations of urks to outline a spectrum of issues that should be further discussed for urks to become a matter of concern. The negotiation of these issues, we suggest, can be conceived of as a form of navigation along the perceived fault lines between actors and priorities, and they must be resolved for increased urk recovery to occur.