Black Snow (def.) describes the visible and measurable deposition of residual streams from steel production — including particulate matter, graphite-containing particles, and other solid industrial fractions — that settle in the living environment through atmospheric dispersion or secondary pathways, where they may also be applied in construction materials, and which can be analytically related to steel-industrial activities.
Black Snow (def.) describes the visible and measurable deposition of residual streams from steel production — including particulate matter, graphite-containing particles, and other solid industrial fractions — that settle in the living environment through atmospheric dispersion or secondary pathways, where they may also be applied in construction materials, and which can be analytically related to steel-industrial activities.
STORIES
INTERVIEWS
DATA
ABOUT
Lucky day
Black Snow began in 2021, when I first noticed a fine layer of black dust settling around my studio in the Witte Theater in IJmuiden, next to Tata Steel. It marked the starting point of an inquiry — a growing awareness that this was not incidental, but part of a recurring phenomenon. Reports of blackened snow near Wijk aan Zee, close to the coal storage along the Reyndersweg, brought the issue into public view. At the same time, my own surroundings were regularly affected: windows darkened, my car covered in residue, and a persistent industrial smell in the air. What I did not yet understand was how often this occurred, or what it precisely was. Gradually, I found myself compelled to look closer — to observe, document, and understand what this ‘black snow’ actually represented.
Border zone, 2021
Dune landscape at the edge of the Tata Steel site near IJmuiden.
Marianne, resident of IJmuiden, 2021
Marianne lived with her husband Tom on Middenhavenstraat in IJmuiden, on a industrial site near the harbour and close to the lighthouse. Their home stood among warehouses, quays and infrastructure, in the immediate vicinity of the steel industry. Marianne was seriously ill after multiple brain haemorrhages and largely confined to bed. “Laying cards,” she said when I asked what she still liked to do — a way of looking ahead when much had become uncertain. Outside, work in the harbour continued. Her life unfolded in the shadow of industry, intertwined with an environment that never comes to rest.
Marianne lived with her husband Tom on Middenhavenstraat in IJmuiden, on a industrial site near the harbour and close to the lighthouse. Their home stood among warehouses, quays and infrastructure, in the immediate vicinity of the steel industry. Marianne was seriously ill after multiple brain haemorrhages and largely confined to bed. “Laying cards,” she said when I asked what she still liked to do — a way of looking ahead when much had become uncertain. Outside, work in the harbour continued. Her life unfolded in the shadow of industry, intertwined with an environment that never comes to rest.
IJMUIDEN
Fish Smoker Mateusz, IJmuiden, 2021
Mateusz (37) has lived in the IJmond region for nine years. He moved to the Netherlands from Poland with his wife and works in a fish smoking facility that is part of Cornelis Vrolijk. The environment made an immediate impression. "This is an industrial region," he says. "A large part of the people here work in factories." For Mateusz, this means more than just work. The industry shapes the daily rhythm of the place where he has come to live—visible in the landscape, defining income, community, and the life he has built here.
Mateusz (37) has lived in the IJmond region for nine years. He moved to the Netherlands from Poland with his wife and works in a fish smoking facility that is part of Cornelis Vrolijk. The environment made an immediate impression. "This is an industrial region," he says. "A large part of the people here work in factories." For Mateusz, this means more than just work. The industry shapes the daily rhythm of the place where he has come to live—visible in the landscape, defining income, community, and the life he has built here.
- Rob Wanders 1952 - 2025 †
This monitoring station stands guard along the canal, directly facing Tata Steel. It measures and records emissions, a silent witness to the intersection of industry and environment in IJmuiden. Data from this station is shared at luchtmeet.net, offering transparency and insight into the air we breathe.
IJmuiden: A Town Shaped by Industry
IJmuiden, a small coastal town on the North Sea, is a place where the rhythm of life is dictated by industry. Nestled beside the towering presence of Tata Steel, its skyline is marked by smokestacks, cranes, and the relentless activity of the harbor. Here, the sea meets steel, fishery, and offshore industries—an unyielding landscape of grey and grit. The town’s streets, its air, even the horizon, bear the imprint of labor: a community built in the service of production, where the North Sea’s winds carry both the scent of salt and the hum of machinery. IJmuiden is not just a place on the map; it’s a testament to the raw, unvarnished marriage of humanity and industry.
IJmuiden, a small coastal town on the North Sea, is a place where the rhythm of life is dictated by industry. Nestled beside the towering presence of Tata Steel, its skyline is marked by smokestacks, cranes, and the relentless activity of the harbor. Here, the sea meets steel, fishery, and offshore industries—an unyielding landscape of grey and grit. The town’s streets, its air, even the horizon, bear the imprint of labor: a community built in the service of production, where the North Sea’s winds carry both the scent of salt and the hum of machinery. IJmuiden is not just a place on the map; it’s a testament to the raw, unvarnished marriage of humanity and industry.
Rob Wanders (1952–2025), Resident of IJmuiden, 2021
Rob worked for over forty years at Hoogovens, later Tata Steel. He began in maintenance and remained technically involved with the plant throughout his career. Together with his wife Agnes, he lived in IJmuiden, close to his workplace. Agnes recalls how visible the difference was when they stayed elsewhere: "In Alkmaar, the windows were clean. Here, they were black." Of this photograph, she says it captures Rob’s entire life. The image was used on his memorial card.
PERMITTED
Environmental permit
The steel plant in IJmuiden operates under a revised permit based on the Environmental Management Act.
The permit was granted on 16 January 2007 by the Province of North Holland.
The permit and its subsequent amendments comprise hundreds of pages of technical requirements regarding emissions, discharges, and production processes.
“This is not a toothless tiger,” he says. “We mean it. If they do not comply, the permit can be revoked.”
Jeroen Olthof — Deputy (Province of North Holland)
Jeroen Olthof — Deputy (Province of North Holland)
Province of North Holland, 16 January 2007 — decision granting a revised environmental permit under the Environmental Management Act for Tata Steel IJmuiden (then Corus Steel).
STEEL SLAG
Industrial By-product and Construction Material
In the Netherlands, approximately 650,000 tonnes of steel slag are produced
each year — the equivalent of around 26,000 truckloads of material. Steel slag
is generated during the production of steel and in the Netherlands is primarily
produced by Tata Steel in IJmuiden. The stone-like material contains various
metals and has been used for decades in roads, embankments, dikes and
hydraulic engineering works.
Within Dutch regulations, steel slag is generally not classified as waste, but as
a secondary construction material that may be used under certain conditions in
roads, embankments and waterworks.
Concerns about the environmental effects of steel slag have existed for some
time. Steel slag contains, among other substances, calcium oxide and other
reactive minerals. When the material comes into contact with water, chemical
reactions can occur in which hydroxides are formed, causing the pH level of soil
and surface water to increase significantly, making the water strongly alkaline.
Metals may also be released from the material.
In the Netherlands, approximately 650,000 tonnes of steel slag are produced
each year — the equivalent of around 26,000 truckloads of material. Steel slag
is generated during the production of steel and in the Netherlands is primarily
produced by Tata Steel in IJmuiden. The stone-like material contains various
metals and has been used for decades in roads, embankments, dikes and
hydraulic engineering works.
Within Dutch regulations, steel slag is generally not classified as waste, but as
a secondary construction material that may be used under certain conditions in
roads, embankments and waterworks.
Concerns about the environmental effects of steel slag have existed for some
time. Steel slag contains, among other substances, calcium oxide and other
reactive minerals. When the material comes into contact with water, chemical
reactions can occur in which hydroxides are formed, causing the pH level of soil
and surface water to increase significantly, making the water strongly alkaline.
Metals may also be released from the material.
Steel slag - 2025
Research and policy documents indicate that when steel slag is applied in
infrastructure or construction, substances may leach into soil and groundwater.
At the beginning of the 2000s, limits for several substances were relaxed in
order to allow the reuse of industrial by-products. This was also relevant for
steel slag, which contains elements such as vanadium, barium and fluoride.
Through the Temporary Exemption Regulation of the Building Materials Decree
(2004), the permitted leaching standards for these substances were
temporarily increased by a factor of three, allowing the continued use of
materials such as steel slag. Vanadium, in particular, has been found in elevated
concentrations in soil and groundwater at several locations where steel slag
has been applied.
In practice, the use of steel slag has led to problems at several sites. On the
A28 near Hoogeveen, elevated pH values were measured in soil and water, and
damage occurred to the road foundation. At the Haak om Leeuwarden, steel
slag was used as fill material during the construction of the ring road, after
which environmental issues were reported. In Eerbeek and other locations in
Gelderland, residents reported complaints such as stinging eyes, nosebleeds
and respiratory irritation, which were associated with dust from steel slag and
quicklime particles released during transport or processing.
Steel slag is processed and marketed as a construction material by companies
such as Pelt & Hooykaas. The material is incorporated into products such as
Duomix and Graustabiel, which are used as foundation layers under roads,
bicycle paths, parking areas and industrial sites, but also beneath driveways, farmyards and garden paths.
A complete overview of where steel slag has been applied in the Netherlands does not exist. Applications of the material are not centrally registered, which means that in many cases its presence only becomes visible after complaints or environmental investigations.
infrastructure or construction, substances may leach into soil and groundwater.
At the beginning of the 2000s, limits for several substances were relaxed in
order to allow the reuse of industrial by-products. This was also relevant for
steel slag, which contains elements such as vanadium, barium and fluoride.
Through the Temporary Exemption Regulation of the Building Materials Decree
(2004), the permitted leaching standards for these substances were
temporarily increased by a factor of three, allowing the continued use of
materials such as steel slag. Vanadium, in particular, has been found in elevated
concentrations in soil and groundwater at several locations where steel slag
has been applied.
In practice, the use of steel slag has led to problems at several sites. On the
A28 near Hoogeveen, elevated pH values were measured in soil and water, and
damage occurred to the road foundation. At the Haak om Leeuwarden, steel
slag was used as fill material during the construction of the ring road, after
which environmental issues were reported. In Eerbeek and other locations in
Gelderland, residents reported complaints such as stinging eyes, nosebleeds
and respiratory irritation, which were associated with dust from steel slag and
quicklime particles released during transport or processing.
Steel slag is processed and marketed as a construction material by companies
such as Pelt & Hooykaas. The material is incorporated into products such as
Duomix and Graustabiel, which are used as foundation layers under roads,
bicycle paths, parking areas and industrial sites, but also beneath driveways, farmyards and garden paths.
A complete overview of where steel slag has been applied in the Netherlands does not exist. Applications of the material are not centrally registered, which means that in many cases its presence only becomes visible after complaints or environmental investigations.
ENVIRONMENTAL DATA
AIR — emissions to the atmosphere
(based on the electronic Environmental Annual Report – e-MJV, reference year approx. 2022)
| substance |
Carbon dioxide (CO₂) |
|
Carbon monoxide (CO) |
|
Nitrogen oxides (NOx) |
|
Sulphur dioxide (SO₂) |
|
Particulate matter (PM10) |
|
Particulate matter (PM2.5) |
|
Volatile organic compounds (VOCs) |
|
Benzene |
|
Polycyclic aromatic hydrocarbons (PAHs) |
|
Dioxins and furans |
|
Graphite particles (“graphite rain”) |
|
|
| annual quantity |
|
± 11–12 million tonnes |
|
± 30,000–40,000 tonnes |
|
± 6,000–7,500 tonnes |
|
± 3,000–5,000 tonnes |
|
± 700–1,100 tonnes |
|
± 300–500 tonnes |
|
± 200–400 tonnes |
|
± 50–100 tonnes |
|
± 200–600 kg |
|
± 1–10 grams |
|
incidental emissions |
|
source / installation |
|
blast furnaces |
|
blast furnaces, coke gas plants |
|
combustion plants, sinter plant |
|
sinter plant, blast furnaces |
|
sinter plant, ore handling |
|
combustion plants, sintering process |
|
coke gas plants |
|
coke gas plants |
|
coke production |
|
sinter plant |
|
coke gas plants |
| effect |
|
greenhouse gas; climate change |
|
reduces oxygen transport in blood |
|
irritates airways; contributes to smog formation |
|
acidification of ecosystems |
|
penetrates deep into lungs |
|
increases risk of cardiovascular disease |
|
contribute to smog formation |
|
carcinogenic (leukaemia) |
|
several compounds are carcinogenic |
|
highly toxic; endocrine disruption |
|
carbon particles depositing on homes and gardens |
METALS IN PARTICULATE MATTER
(emissions to air; order of magnitude per year, e-MJV)
(emissions to air; order of magnitude per year, e-MJV)
| substance |
|
Lead (Pb) |
|
Cadmium (Cd) |
|
Mercury (Hg) |
|
Arsenic (As) |
|
Nickel (Ni) |
|
Chromium (Cr) |
|
Manganese (Mn) |
|
Zinc (Zn) |
|
Copper (Cu) |
| annual quantity |
|
± 500–1,100 kg |
|
± 10–80 kg |
|
± 1–10 kg |
|
± 30–100 kg |
|
± 200–1,200 kg |
|
± 150–600 kg |
|
± 2–3 tonnes |
|
± 1–2 tonnes |
|
± 1–3 tonnes |
| source / installation |
|
sinter plant, dust systems |
|
ores, coal |
|
coal and ores |
|
sintering process |
|
ores, steel production |
|
steel production |
|
ores |
|
steel production |
|
ores |
| effect |
|
harmful to nervous system |
|
kidney damage |
|
damage to nervous system |
|
carcinogenic |
|
allergies; increased cancer risk |
|
some forms (such as chromium VI) are carcinogenic |
|
neurological damage at high exposure |
|
toxic to aquatic organisms |
|
toxic to aquatic life |
WATER DISCHARGES — NORTH SEA CANAL
(order of magnitude per year, e-MJV)
(order of magnitude per year, e-MJV)
| substance |
Cyanides |
|
Phenols |
|
Ammonium |
|
Fluoride |
|
annual quantity |
| ± 200–600 kg |
|
± 1–5 tonnes |
|
± 20–80 tonnes |
|
± 2–10 tonnes |
|
source |
|
coke production coke gas plants wastewater from coke process steel production sinter plant, dust systems |
| effect |
highly toxic to fish
harmful to plants and animals |
WATER DISCHARGES — NORTH SEA CANAL
(order of magnitude per year, e-MJV)
(order of magnitude per year, e-MJV)
|
material |
|
Steel slag (BOF / LD slag) |
|
Blast furnace slag |
|
Filter dust (flue gas dust) |
|
Coke residues and tar products |
|
annual quantity |
|
± 650,000 tonnes |
|
± 1–1.5 million tonnes |
|
± 5,000–10,000 tonnes |
|
± 5,000–15,000 tonnes |
|
source |
|
steel production |
|
blast furnaces |
|
flue gas filters |
|
coke production |
|
|
| effect |
|
strongly alkaline; may leach metals |
|
often processed into cement |
|
contains metals such as zinc, lead and cadmium |
|
contain aromatic compounds such as PAHs |