Surviving iron mine headframe structure in the Grängesberg mining area, part of the former Bergslagen iron ore field closed in 1989.
The Gruvlave is a surviving mine headframe structure within the Grängesberg mining area of Dalarna County in the Bergslagen district of central Sweden. The Grängesberg mining field, one of northern Europe's largest homogenous iron ore bodies containing magnetite and haematite, was mined for iron from the 16th century until the final closure of the underground mine in December 1989. Industrial-scale mining accelerated dramatically in the late 19th century when London banker Ernest Cassel invested in the field and founded Grängesbergs Grufve AB, leading to the establishment of a dedicated railway connection — Trafikaktiebolaget Grängesberg–Oxelösund Järnvägar (TGOJ) — to the Baltic port of Oxelösund.
Underground mining commenced in the early 20th century, and by the 1970s the subsidence of the ground beneath the former town centre had become so severe that the entire centre of Grängesberg was relocated. The mine produced over 150 million tonnes of iron ore during its operational life and was once the third largest iron mine in Sweden. After closure in 1989, the area became part of the Ekomuseum Bergslagen cultural heritage network.
Headframe structures from the mine remain as landmark features of the former mining landscape.
Iron ore has been mined in the Grängesberg area of the Bergslagen district in Dalarna County, central Sweden, since the Middle Ages. The Grängesberg mining field contains one of northern Europe's largest homogenous iron ore bodies, mineralised primarily as magnetite (Fe₃O₄) with approximately 20% haematite (Fe₂O₃) and apatite. The deposit lies approximately 10 kilometres southwest of Ludvika.
Small-scale iron ore extraction had been practised at Grängesberg for several centuries when the area attracted international attention in the late 19th century. London banker Ernest Cassel heard about approximately 200 open pits and mines in the area and made a decisive investment. He founded Grängesbergs Grufve AB to manage the mines, and his vision extended to controlling the entire chain of production from extraction to export. This led to the establishment of Trafikaktiebolaget Grängesberg–Oxelösund Järnvägar (TGOJ), a railway linking the mine to the Baltic export port of Oxelösund, with an ore export connection constructed in 1877 from Oxelösund. The transformation of Grängesberg was rapid: large numbers of workers moved to the area and the mining company constructed workers' housing in two residential developments at Stora Hagen and Källfallet, using English-influenced floor plans.
In the early 20th century, underground mining commenced at Grängesberg. The transition to underground working introduced the substantial surface infrastructure that came to define the mine's visible character, including shaft headframes (gruvlavar), engine houses, and processing facilities. A building initially constructed as a smithy (Mojsen) was converted into a miners' dining hall as the workforce grew.
Over the following decades, the mine continued to expand. The underground workings progressively undermined the land beneath the original town centre of Grängesberg. By the 1970s, the subsidence had become so extensive that the old town centre had to be relocated: houses were moved, and even the old train station, church, and cemetery with its graves were relocated to new sites, with the church rebuilt in Orsa. The last houses in the old centre of Grängesberg were moved in 1976. The original settlement area became a sealed zone in which traces of former buildings remain.
The mine produced more than 150 million tonnes of iron ore during its working life and was at its operational peak the third largest iron mine in Sweden. In December 1989 the mine was closed due to prevailing market conditions, with the last ore train to Oxelösund departing in 1990. The closure ended iron ore extraction at a site that had been central to the economy and identity of the Grängesberg community since the Middle Ages.
Following closure, the Grängesberg mining area became part of the Ekomuseum Bergslagen network of industrial heritage sites. Surviving surface structures from the mine, including headframe (gruvlave) structures, remain as visible monuments of the mining era and are described as landmarks of the former mining landscape visible from viewpoints in the surrounding area. The deposit at Grängesberg has been the subject of post-closure proposals for reopening: a pre-feasibility study was completed in April 2012, and a 25-year mining concession was awarded to Grängesberg Iron AB by the Swedish Mining Inspectorate in May 2013. An updated pre-feasibility study was announced in July 2022, with proposals for an underground mine with a processing capacity of 5.3 million tonnes per annum and an estimated investment of approximately 560 million US dollars.