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Inventories
9 Months Ended
Sep. 30, 2022
Inventories  
Inventories

4. Inventories

Major classes of inventory at September 30, 2022, December 31, 2021 and September 30, 2021 are as follows:

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September 30,

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December 31,

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September 30,

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2022

    

2021

    

2021

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Finished goods

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$

623

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$

659

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$

651

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Raw materials

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131

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119

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120

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Operating supplies

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38

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38

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37

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$

792

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$

816

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$

808

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