Assertion: champagne bottle | /r/AtLocation | the s. s. bertrand
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Source sentences:
text: And finally, many/most of the champagne bottles found on the S. S. Bertrand, which sank in the Missouri River in April 1865, were sand pontiled (Switzer 1974; personal observations of a portion of the collection by this website author October 2015) although that would be considered about the end of the sand pontil period.