约翰·D·洛克菲勒：洛克菲勒回忆录·摘录 76

The story of the early history of the oil trade is too well known to bear repeating in detail. The cleansing of crude petroleum was a simple and easy process, and at first the profits were very large. Naturally, all sorts of people went into it: the butcher, the baker, and the candlestick-maker began to refine oil, and it was only a short time before more of the finished product was put on the market than could possibly be consumed. The price went down and down until the trade was threatened with ruin. It seemed absolutely necessary to extend the market for oil by exporting to foreign countries, which required a long and most difficult development; and also to greatly improve the processes of refining so that oil could be made and sold cheaply, yet with a profit, and to use as by-products all of the materials which in the less-efficient plants were lost or thrown away.

出处： https://www.gutenberg.org/ebooks/17090
定位：Chapter IV, excerpt 76 · 核对日期：2026-10-19 · 核验：短摘录

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