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Great Hemp Conspiracy

The Great Hemp Conspiracy Series

Cannabis in the Industrial Age

Explore the rise, fall, and temporary revival of industrial hemp in early 20th century America. Click each part to dive into the story!

The Great Hemp Conspiracy
Cannabis in the Industrial Age



Part 1 – Hemp Powers Industry

80% of varnish relied on hemp oil. Henry Ford experimented with hemp car bodies. Diesel engines ran on hemp oil. Industrial hemp momentum was building.

Tags: Industrial Hemp, Henry Ford Hemp Car, Hemp Oil

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Part 2 – The Decorticator & The Threat to Big Business

Hemp processing was labor-intensive until the decorticator was invented. This threatened Hearst’s timber empire and DuPont’s synthetic chemical investments.

Tags: Hemp Decorticator, Hemp Processing, Hearst Timber Empire

Read Part 2


Part 3 – Anslinger, DuPont & Hearst: The Power Players

Harry Anslinger’s job pressures, DuPont’s industrial interests, Hearst’s pulp empire, and Mellon’s backing set the stage for cannabis suppression.

Tags: Harry Anslinger, DuPont, Hearst, Andrew Mellon

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Part 4 – Public Manipulation & Propaganda

Hearst’s yellow journalism and Anslinger’s media strategies shifted public opinion against cannabis, paving the way for the Marihuana Tax Act.

Tags: Cannabis Propaganda, Marihuana Tax Act, Yellow Journalism

Read Part 4


Part 5 – Legislative Aftermath & the Fall of Industrial Hemp

The Marihuana Tax Act crushed farmers and innovators. Industrial hemp products nearly vanished, while synthetic alternatives thrived.

Tags: Marihuana Tax Act, Industrial Hemp Suppression, Henry Ford Hemp Car

Read Part 5


Part 6 – Hemp for Victory

WWII revival of hemp for ropes, sails, and composites. “Hemp for Victory” showcased the plant’s strategic importance before post-war suppression returned.

Tags: Hemp for Victory, WWII Hemp, Industrial Hemp Revival

Read Part 6

Stay tuned for the next series exploring post-war cannabis prohibition, modern revival efforts, and the ongoing struggle for hemp legalization and cannabis normalization.

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