In the shattered landscape of Gaza, where entire neighbourhoods have been reduced to mountains of broken concrete and twisted metal, two sisters have pioneered a method of turning debris into building blocks. Their initiative, supported by a British engineering charity, offers a sliver of practical hope in a region where reconstruction has seemed impossible under the weight of blockade and conflict.
Mariam and Salma al-Hourani, both in their twenties, observed that the rubble choking Gaza's streets could be processed into a usable construction material. They developed a technique involving crushing concrete fragments, sieving the aggregate, and mixing it with cement and water to form interlocking bricks. The process is low-tech and labour-intensive, but it requires no imported materials, reducing dependency on unreliable border crossings.
The British charity Engineers Without Borders UK has provided technical guidance and a small grant to scale the project. The organisation’s field coordinator, James Whitaker, noted that the sisters’ approach is “elegant in its simplicity” and could be replicated across other conflict zones. “This is not a high-energy solution. It uses what is already there. The physics of compression and binding is straightforward,” he said. “The challenge is logistics and quality control.”
The statistics are sobering. The United Nations estimates that over 100 million tonnes of rubble litter Gaza from the most recent escalation alone. Rebuilding would traditionally require vast amounts of imported sand, gravel, and cement, resources that are scarce and expensive under the blockade. The al-Hourani method diverts waste from landfills and reduces the carbon footprint of reconstruction by an estimated 40 per cent compared to importing virgin materials.
However, the scale of the need dwarfs the pilot project. Mariam al-Hourani, speaking through a crackling video call, stated that her team can produce about 500 bricks per day. To rebuild one destroyed apartment building would require upwards of 100,000 bricks. “We are a test tube. We prove it works. Now we need real investment,” she said. “The energy and will are here. The cement and the funding are not.”
The engineering charity is now seeking partnerships with larger NGOs and potential government donors. There is talk of establishing a centralised rubble-crushing facility powered by solar panels, which could produce enough aggregate for entire districts. But that vision remains hypothetical without secure funding and access to equipment.
For now, the sisters’ brick-making operation occupies a small plot of land that was once a school. The grinding machine is a repurposed industrial mixer; the moulds are welded from scrap metal. Yet the bricks are strong, testing at compressive strengths comparable to standard concrete blocks. Engineers Without Borders has certified them for non-load-bearing walls in single-storey structures.
This story underscores a broader truth about resilience in the face of systematic destruction. The raw material of war can be transformed into the foundation of peace, but only if the international community commits resources commensurate with the need. The al-Hourani sisters have demonstrated the technical and human capacity. The rest is a matter of political will.
