The document discusses different methods for disposing of plant assets in accounting. It provides examples of recording the sale of a plant asset for its book value, recording a partial year's depreciation expense before selling an asset, selling an asset for more than its book value resulting in a gain, and selling an asset for less than its book value resulting in a loss. The key steps outlined are removing the original cost of the asset, recording any gains or losses on the sale, recording the cash received, and updating the plant asset record.