On the diggings the miners were confronted with a strange new world of ‘bottoms’, ‘second bottoms’, and ‘false bottoms’, of ‘cradles’, ‘long toms’, and winzes’.
Definition of long tom in US English:
long tom
noun
historical, informal
1A large cannon with a long range.
远程大炮
2A trough for washing gold-bearing deposits.
（汰洗砂金用的）长槽
Example sentencesExamples
On the diggings the miners were confronted with a strange new world of ‘bottoms’, ‘second bottoms’, and ‘false bottoms’, of ‘cradles’, ‘long toms’, and winzes’.