Before refrigeration, someone had to saw frozen lakes into blocks and ship them around the world.
In the early nineteenth century, before mechanical refrigeration existed, ice was harvested from frozen lakes and rivers, cut into uniform blocks, packed in sawdust for insulation, and shipped by rail and sea to customers across the country and around the world. The ice cutter was a seasonal occupation that employed tens of thousands of workers in New England and the northern United States.1
Frederic Tudor of Boston, known as the "Ice King," launched the commercial ice trade in 1806 when he shipped a cargo of ice from Boston to Martinique. The venture was initially a financial disaster. Within decades, Tudor had built a global distribution network stretching to India, Cuba, and the American South.2
At its peak in the 1880s, the American ice industry employed an estimated 90,000 workers and harvested roughly 25 million tons of ice per year. The work was dangerous. Ice cutters operated horse-drawn saws and plows on frozen surfaces, and drownings were common.3
The industry vanished within a generation. Mechanical refrigeration, commercially available by the 1880s and widespread by the 1920s, made ice harvesting obsolete. The ice cutter joined the lamplighter and the telegraph operator as an occupation erased by technological displacement.
The ice trade had downstream effects beyond cooling. Tudor's shipments introduced cold storage to tropical climates, enabling the preservation of perishable goods. The infrastructure he built, icehouses, insulated wagons, distribution routes, laid the groundwork for the cold supply chain that refrigeration later formalized.4
Ice harvesting persisted in some rural communities well into the twentieth century, particularly where electricity arrived late. Artificial ice factories replaced natural ice harvesting before home refrigerators replaced both.5