| Leduc | On 13 Feb 1947, the Leduc No 1 well, in Alberta, successfully tapped the huge Leduc oil field. By the end of 1947, some 30 wells in the field were producing 3500 barrels of oil a day. |
| Tectonic Movement | belonging to the structure of the earth’s crust and to general changes in it, such as folding or faulting. |
| bitumen | the heaviest, thickest form of petroleum. |
| earthquake | a shaking or sliding of the ground. It is caused by the sudden movement of masses of rock along a fault or by changes in the size and shape of masses of rock far beneath the earth’s surface. |
| iron ore | The term "iron ore" is used when the rock is sufficiently rich in iron minerals to be mined economically. |
| minerals | a substance obtained by mining or digging in the earth |
| salt | a white substance found in the earth and in seawater; sodium chloride; table salt. Salt is used to season and preserve food and in many industrial processes. |
| soil conservation | preventing soil erosion from water and wind. |
Drag corresponding items onto each other to make them disappear.
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