These passwords take you to different individual mining missions. You'll have infinite lives, and an infinite supply of all the different ships.

Effect	Password
Mining Mission	PLN
Mining Mission	MM85
Mining Mission	MM86
Mining Mission	MM87
Mining Mission	MM88
Mining Mission	MM89
Mining Mission	MM90
Mining Mission	MM91
Mining Mission	MM92
Mining Mission	MM84
Mining Mission	MM83
Mining Mission	MM82
Mining Mission	TNKR
Mining Mission	MM70
Mining Mission	MM71
Mining Mission	MM72
Mining Mission	MM73
Mining Mission	MM74
Mining Mission	MM80
Mining Mission	MM81
Mining Mission	MM93