Story context revision — narration, visual sources and timing.
The revised opening establishes the place, period, purpose and stakes of the story. The tables below identify the new material and map each retained section to the corrected original film.
Original equipment review and visual credits remain the source record for the retained material. Times on that earlier page refer to the original master; the mapping below gives their positions in this edition.
Download the structured credits and timing record
New narration and its sources
Three discoveries explain the field
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Southwest of Calgary, gas escaping near the Sheep River encouraged explorers to drill. Between nineteen fourteen and nineteen thirty-six, three discoveries reshaped Turner Valley: Dingman Number One's wet gas, Royalite Number Four's deeper reservoir, and the crude-oil discovery at Turner Valley Royalties Number One. Each changed what people could produce and what they understood about the field. The story includes fire, sour gas, valuable liquids and a growing dispute over gas being burned away. At Royalite Number Four, a major discovery became an emergency.
Discovery — Primary mapped reference for script source EARLY; chapters 2, 3, 5. Also see document records DOC029. Research access: Web text read. Its Alberta-first-productive-well claim is overbroad and should not be repeated.
Challenging Times: 1921–1938 — Primary mapped reference for script source CHALLENGING; chapters 5, 6, 7, 15. Research access: Web text read. Spud 1923 conflicts other accounts; ignition Oct 19 differs other secondary sources. Do not narrate exact ignition date. Incident includes flow, fire and control stages. Avoid a single unqualified 21-day duration.
Turner Valley: Oil Column Era, 1936–1946 — Primary mapped reference for script source OILCOLUMN; chapters 11. Research access: Search-index main text inspected; original source identified.. Do not use the apparent 10 million barrels each day unit error elsewhere on this page.
The Provincial Government and Conservation — Primary mapped reference for script source CONSERVATION; chapters 10, 15. Also see document records DOC023. Research access: Web text read. Incorrectly puts Social Credit's election in 1936; it was 1935, as AER account correctly states. Avoid copying wholesale.
New visual sequences
Historical photographs and source documents retain their stated identity and attribution. Explanatory diagrams and typographic sequences are identified separately.
Turner Valley
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Government of Alberta · Energy Heritage, Turner Valley discovery history
1926 installation. The pre-fire 1924 drilling rig is not depicted.
Caption: Overall installations at Royalite No.4, photographed in original autochrome colour by Frédéric Gadmer on 13 May 1926. Not AI colourization. This is the 1926 production installation, not the pre-fire 1924 drilling rig.
Credit: Frédéric Gadmer / Département des Hauts-de-Seine, musée Albert-Kahn, A49050
