1.   Both employees deny having seen the nitrogen label.

2.   Both maintenance workers denied having seen the nitrogen label.

3.   He said the tank had an oxygen label partially covered by a smaller nitrogen label.

4.   Miles said the tank had an oxygen label that was partially covered by a smaller nitrogen label.

5.   The nitrogen tank had an oxygen label partially covered by a smaller nitrogen label, authorities said.

6.   The nitrogen tank looked similar to tanks that contain oxygen, with the nitrogen label the only major distinguishing characteristic.

7.   The tank had an oxygen label partially covered by a smaller nitrogen label, authorities said.

8.   Two maintenance workers at the nursing home denied having seen the nitrogen label.