Heavy Sky by Alex O. Harb

Three and a half centuries ago, a Federation probe found a world with floating islands and perpetual EM storm. Settlers followed, without computers or robots. Only steam, hand labor, and no way back. They built zeppelins, tamed giant eagles, and forged kingdoms in the clouds. Now the Federation has come again. To mine the anti-gravity mineral. And it has tipped the fragile balance of this world From $0.99 – SHOP NOW /