1 Subjects: “...canonically closed...”

2 Subjects: “...closures...”

3 Subjects: “...closed-loop detection...”

4 Subjects: “...circular closed reservoir...”

5 Subjects: “...closed-loop detection...”

6 Subjects: “...closed-loop detection...”

7 Subjects: “...circular closed reservoir...”

8 “... changes, combined with plant closures and other restructuring, have greatly reduced industry employment...”