1ADRIANI 2015 search for relatively light quark matter with charge $\mathit Z$ = $1 - 8$. See their Figs. 2 and 3 for flux upper limits.
2AMBROSIO 2000B searched for quark matter (``nuclearites'') in the velocity range ($10^{-5} - 1)~\mathit c$. The listed limit is for $2 \times 10^{-3}~\mathit c$.
3ASTONE 1993 searched for quark matter (``nuclearites'') in the velocity range ($10^{-3} - 1)~\mathit c$. Their Table$~$1 gives a compilation of searches for nuclearites.
4AHLEN 1992 searched for quark matter (``nuclearites''). The bound applies to velocity $<2.5 \times 10^{-3}~\mathit c$. See their Fig.$~$3 for other velocity/$\mathit c$ and heavier mass range.
5NAKAMURA 1991 searched for quark matter in the velocity range ($4 \times 10^{-5} - 1)~\mathit c$.
6ORITO 1991 searched for quark matter. The limit is for the velocity range ($10^{-4} - 10^{-3})~\mathit c$.
7LIU 1988 searched for quark matter (``nuclearites'') in the velocity range ($2.5 \times 10^{-3} - 1)\mathit c$. A less stringent limit of $5.8 \times 10^{-11}$ applies for ($1 - 2.5){\times }10^{-3}\mathit c$.
8BARISH 1987 searched for quark matter (``nuclearites'') in the velocity range ($2.7 \times 10^{-4} - 5 \times 10^{-3})\mathit c$.
9NAKAMURA 1985 at KEK searched for quark-matter. These might be lumps of strange quark matter with roughly equal numbers of ${\mathit {\mathit u}}$, ${\mathit {\mathit d}}$, ${\mathit {\mathit s}}$ quarks. These lumps or nuclearites were assumed to have velocity of ($10^{-4}-10^{-3})~\mathit c$.
10ULLMAN 1981 is sensitive for heavy slow singly charge particle reaching earth with vertical velocity 100$-$350 km/s.
References:
ADRIANI
2015
PRL 115 111101
New Upper Limit on Strange Quark Matter Abundance in Cosmic Rays with the PAMELA Space Experiment
AMBROSIO
2000B
EPJ C13 453
Search for Nuclearites with the MACRO Detector at Gran Sasso
ASTONE
1993
PR D47 4770
Upper Limit for Nuclearites Flux from the Rome Gravitational Wave Resonant Detectors
AHLEN
1992
PRL 69 1860
Search for Nuclearites Using the MACRO Detector
NAKAMURA
1991
PL B263 529
New Flux Limit on Strange Matter
ORITO
1991
PRL 66 1951
Search for Supermassive Relics with a 2000-m${}^{2}$ Array of Plastic Track Detectors
LIU
1988
PRL 61 271
Nuclearites Flux Limit from Gravitational Wave Detectors
BARISH
1987
PR D36 2641
Search for Grand Unification Monopoles and Other Ionizing Heavy Particles Using a Scintillation at the Earth's Surface
NAKAMURA
1985
PL 161B 417
Search for Cosmic Nuclearites at Sea Level
ULLMAN
1981
PRL 47 289
Limits on the Flux of Slowly Moving Very Massive Particles Carrying Electric or Magnetic Charge