Video: The tips you need to plant a tree
OPPD foresters offer their guidance and demonstrate how to successfully plant a container tree.Read More >
A big innovation for fast-food giant McDonald’s was highlighted in the January-February, 1968 edition of OPPD’s Ideas magazine. A trial began at a South 24th Street McDonald’s, where electric quartz heaters with reflectors were mounted above window areas. The effect was “radiant beams of heat passed through the air, creating a band of pleasant warmthRead More >
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