Drainage%20Methods,%20Laws%20and%20Legislation - PowerPoint PPT Presentation

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Drainage%20Methods,%20Laws%20and%20Legislation

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Drainage commonly through open ditch systems or mole systems ... Mole Systems ... Mole plough pulled behind tractor creating tunnels. Promotes shallow flow of water ... – PowerPoint PPT presentation

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Learn more at: http://www.engr.usask.ca
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